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Finding the Fourth Proportional to 425,765.76, 587,543.28 and 234,787.20

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Solution

The fourth proportional to 425,765.76, 587,543.28 and 234,787.20 is: 323,998.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,765.76 : 587,543.28 = 234,787.20 : x
  2. Step 2: Convert to fraction form
    425,765.76/587,543.28 = 234,787.20/x
  3. Step 3: Cross multiply
    425,765.76x = 587,543.28 × 234,787.20
  4. Step 4: Simplify right side
    425,765.76x = 137,947,641,590.02
  5. Step 5: Solve for x
    x = 137,947,641,590.02/425,765.76
  6. Step 6: Final answer
    x = 323,998.91

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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.