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Find the Fourth Proportional To 3a, 6a2 And 2ab2 - Mathematics

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Question

Find the fourth proportional to 3a, 6a2 and 2ab2

Solution

Let the fourth proportional to 3a, 6a2 and 2ab2 be x.

⇒ 3a : 6a2 = 2ab2 : x

⇒ 3a × x = 2ab2 6a2

⇒ 3a × x = 12a3b2

⇒ x = 4a2b2

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APPEARS IN

 Selina Solution for Concise Mathematics for Class 10 ICSE (2020 (Latest))
Chapter 7: Ratio and Proportion (Including Properties and Uses)
Exercise 7(B) | Q: 1.2 | Page no. 94
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Find the Fourth Proportional To 3a, 6a2 And 2ab2 Concept: Ratios.
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