Question 52

The fourth proportional to 10, 12, 15 is:

Solution

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Let the fourth proportional to 10, 12, 15 = $$d$$

$$=$$>  $$\frac{10}{12}=\frac{15}{d}$$

$$=$$>  $$10d=180$$

$$=$$>  $$d=18$$

Hence, the correct answer is Option B

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