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Finding the Fourth Proportional to 156,691.90, 235,037.85 and 125,587.90

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Solution

The fourth proportional to 156,691.90, 235,037.85 and 125,587.90 is: 188,381.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,691.90 : 235,037.85 = 125,587.90 : x
  2. Step 2: Convert to fraction form
    156,691.90/235,037.85 = 125,587.90/x
  3. Step 3: Cross multiply
    156,691.90x = 235,037.85 × 125,587.90
  4. Step 4: Simplify right side
    156,691.90x = 29,517,910,002.02
  5. Step 5: Solve for x
    x = 29,517,910,002.02/156,691.90
  6. Step 6: Final answer
    x = 188,381.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.