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Finding the Fourth Proportional to 425,388.80, 587,049.07 and 234,414.49

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Solution

The fourth proportional to 425,388.80, 587,049.07 and 234,414.49 is: 323,498.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,388.80 : 587,049.07 = 234,414.49 : x
  2. Step 2: Convert to fraction form
    425,388.80/587,049.07 = 234,414.49/x
  3. Step 3: Cross multiply
    425,388.80x = 587,049.07 × 234,414.49
  4. Step 4: Simplify right side
    425,388.80x = 137,612,807,835.61
  5. Step 5: Solve for x
    x = 137,612,807,835.61/425,388.80
  6. Step 6: Final answer
    x = 323,498.90

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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.