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Finding the Fourth Proportional to 71,691.76, 106,932.64 and 62,257.60

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Solution

The fourth proportional to 71,691.76, 106,932.64 and 62,257.60 is: 92,861.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,691.76 : 106,932.64 = 62,257.60 : x
  2. Step 2: Convert to fraction form
    71,691.76/106,932.64 = 62,257.60/x
  3. Step 3: Cross multiply
    71,691.76x = 106,932.64 × 62,257.60
  4. Step 4: Simplify right side
    71,691.76x = 6,657,369,528.06
  5. Step 5: Solve for x
    x = 6,657,369,528.06/71,691.76
  6. Step 6: Final answer
    x = 92,861.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.