Cardano, Geronimo, Opvs novvm de proportionibvs nvmerorvm, motvvm, pondervm, sonorvm, aliarvmqv'e rervm mensurandarum, non solùm geometrico more stabilitum, sed etiam uarijs experimentis & observationibus rerum in natura, solerti demonstratione illustratum, ad multiplices usus accommodatum, & in V libros digestum. Praeterea Artis Magnae, sive de regvlis algebraicis, liber vnvs abstrvsissimvs & inexhaustus planetotius Ariothmeticae thesaurus ... Item De Aliza Regvla Liber, hoc est, algebraicae logisticae suae, numeros recondita numerandi subtilitate, secundum Geometricas quantitates inquirentis ...

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page |< < of 291 > >|
Co^{m}.
Per 136.
P
ropoſ.
Anni Aurei 1 1 13/70 2 1 67/165 5 2 7/23 6 2 118/161 7 3 14/61 10 5 3917/12566 20 31 38/61 40 1000
Sit gratia exempli, in ſex annis uſura rediuiua uigeſimæ, erit­
qúe
proportio 21/20, cuius numeratorem ſexies ducam in ſe primum
bis
fit 441: ergo ducto 441 in ſe fit qúe 194481 ductum in 441
fit
85766121 ſexies ductum 21, quinquies autem ducam 20 deno­
153[Figure 153]
minatorem
in ſe fit bis 400, ter 8000,
quinquies
ergo 3200000, diuide nume­
ratorem
per denominatorem abiectis
quinque
notis erit 26 2566121/3200000. Quæ propor
tio
eſt proxima 26 4/5 ad 20, & ita ut 134 ad
100
. Et ſi pigeret tædij aut laboris poſſes
pro
xij annis, ducere 134 in ſe, & fit 17956
diuide
per 100 eadem ratione, exit 179 14/25
& ita 100 in xij annis, fit tantundem.
Et
ita
pro xviij & xx annis.
Co^{m}.

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