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Finding the Fourth Proportional to 176,229.28, 243,127.20 and 100,737.28

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Solution

The fourth proportional to 176,229.28, 243,127.20 and 100,737.28 is: 138,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,229.28 : 243,127.20 = 100,737.28 : x
  2. Step 2: Convert to fraction form
    176,229.28/243,127.20 = 100,737.28/x
  3. Step 3: Cross multiply
    176,229.28x = 243,127.20 × 100,737.28
  4. Step 4: Simplify right side
    176,229.28x = 24,491,972,822.02
  5. Step 5: Solve for x
    x = 24,491,972,822.02/176,229.28
  6. Step 6: Final answer
    x = 138,977.89

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Why These Related Problems?

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