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By using formula of mean proportional and third proportional, find the ratio of third proportional to 8 & 20 and mean proportional between 4 & 9.
  • a)
    21 : 6
  • b)
    25 : 3
  • c)
    5 : 3
  • d)
    8 : 3
Correct answer is option 'B'. Can you explain this answer?
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By using formula of mean proportional and third proportional, find the ratio of third proportional to 8 & 20 and mean proportional between 4 & 9.a)21 : 6b)25 : 3c)5 : 3d)8 : 3Correct answer is option 'B'. Can you explain this answer?
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