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Finding the Fourth Proportional to 457,562.13, 686,443.70 and 187,691.86

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Solution

The fourth proportional to 457,562.13, 686,443.70 and 187,691.86 is: 281,579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,562.13 : 686,443.70 = 187,691.86 : x
  2. Step 2: Convert to fraction form
    457,562.13/686,443.70 = 187,691.86/x
  3. Step 3: Cross multiply
    457,562.13x = 686,443.70 × 187,691.86
  4. Step 4: Simplify right side
    457,562.13x = 128,839,894,838.28
  5. Step 5: Solve for x
    x = 128,839,894,838.28/457,562.13
  6. Step 6: Final answer
    x = 281,579.02

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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.