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Finding the Fourth Proportional to 425,446.85, 587,128.95 and 234,472.54

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Solution

The fourth proportional to 425,446.85, 587,128.95 and 234,472.54 is: 323,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,446.85 : 587,128.95 = 234,472.54 : x
  2. Step 2: Convert to fraction form
    425,446.85/587,128.95 = 234,472.54/x
  3. Step 3: Cross multiply
    425,446.85x = 587,128.95 × 234,472.54
  4. Step 4: Simplify right side
    425,446.85x = 137,665,616,214.03
  5. Step 5: Solve for x
    x = 137,665,616,214.03/425,446.85
  6. Step 6: Final answer
    x = 323,578.89

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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.