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Finding the Fourth Proportional to 425,456.46, 587,129.92 and 234,469.85

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Solution

The fourth proportional to 425,456.46, 587,129.92 and 234,469.85 is: 323,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,456.46 : 587,129.92 = 234,469.85 : x
  2. Step 2: Convert to fraction form
    425,456.46/587,129.92 = 234,469.85/x
  3. Step 3: Cross multiply
    425,456.46x = 587,129.92 × 234,469.85
  4. Step 4: Simplify right side
    425,456.46x = 137,664,263,100.56
  5. Step 5: Solve for x
    x = 137,664,263,100.56/425,456.46
  6. Step 6: Final answer
    x = 323,568.39

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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.