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Finding the Fourth Proportional to 361,385.92, 542,151.60 and 124,737.76

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Solution

The fourth proportional to 361,385.92, 542,151.60 and 124,737.76 is: 187,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,385.92 : 542,151.60 = 124,737.76 : x
  2. Step 2: Convert to fraction form
    361,385.92/542,151.60 = 124,737.76/x
  3. Step 3: Cross multiply
    361,385.92x = 542,151.60 × 124,737.76
  4. Step 4: Simplify right side
    361,385.92x = 67,626,776,164.42
  5. Step 5: Solve for x
    x = 67,626,776,164.42/361,385.92
  6. Step 6: Final answer
    x = 187,131.74

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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.