Q: Find the fourth proportional :--
<i> 8 , 10, 12
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Step-by-step explanation:
Let x be the fourth proportional to 8, 10 and 12.
⇒8:10::12:x.
Product of means = Product of extremes
10×12=8×x
x=10×12/ 8 = 15.
∴ The fourth proportional to 8, 10 and 15.
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