When four magnitudes are continual proportionals, the first is said to have to the fourth the triplicate ratio of that which it has to the second, and so on, quadruplicate, &c., increasing the denomination still by unity, in any number of proportionals. Instructions Given in the Drawing School Established by the Dublin Society ... - Pàgina 165 per Joseph Fenn - 1769 Visualització completa -
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