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Finding the Fourth Proportional to 392,562.10, 588,843.15 and 112,042.90

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Solution

The fourth proportional to 392,562.10, 588,843.15 and 112,042.90 is: 168,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,562.10 : 588,843.15 = 112,042.90 : x
  2. Step 2: Convert to fraction form
    392,562.10/588,843.15 = 112,042.90/x
  3. Step 3: Cross multiply
    392,562.10x = 588,843.15 × 112,042.90
  4. Step 4: Simplify right side
    392,562.10x = 65,975,694,171.14
  5. Step 5: Solve for x
    x = 65,975,694,171.14/392,562.10
  6. Step 6: Final answer
    x = 168,064.35

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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.