Question : Find the fourth proportion to 8,14, and 24.
Option 1: 42
Option 2: 26
Option 3: 40
Option 4: 36
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Correct Answer: 42
Solution : Let the fourth proportion be $x$. So, 8 : 14 :: 24 : $x$ ⇒ $\frac{8}{14}=\frac{24}{x}⇒x=42$ Hence, the correct answer is 42.
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Question : Find the fourth proportion to 55, 60, and 33.
Option 1: 36
Option 2: 24
Option 3: 28
Option 4: 30
Question : Find the fourth proportion to 21, 49, and 18.
Option 2: 56
Option 3: 49
Option 4: 44
Question : Find the fourth proportion to the numbers 49, 51, and 98.
Option 1: 96
Option 2: 102
Option 3: 112
Option 4: 90
Question : Find the third proportion of two numbers 6 and 24.
Option 1: 94
Option 2: 84
Option 3: 96
Option 4: 86
Question : If A is the mean proportion of 24 and 6. B is the mean proportion of 81 and 9. Find the value of 3A + B.
Option 1: 33
Option 2: 32
Option 3: 63
Option 4: 55
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