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Finding the Fourth Proportional to 117,130.60, 161,640.29 and 63,415.58

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Solution

The fourth proportional to 117,130.60, 161,640.29 and 63,415.58 is: 87,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,130.60 : 161,640.29 = 63,415.58 : x
  2. Step 2: Convert to fraction form
    117,130.60/161,640.29 = 63,415.58/x
  3. Step 3: Cross multiply
    117,130.60x = 161,640.29 × 63,415.58
  4. Step 4: Simplify right side
    117,130.60x = 10,250,512,741.72
  5. Step 5: Solve for x
    x = 10,250,512,741.72/117,130.60
  6. Step 6: Final answer
    x = 87,513.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.