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Finding the Fourth Proportional to 625,761.52, 863,546.76 and 339,280.72

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Solution

The fourth proportional to 625,761.52, 863,546.76 and 339,280.72 is: 468,205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,761.52 : 863,546.76 = 339,280.72 : x
  2. Step 2: Convert to fraction form
    625,761.52/863,546.76 = 339,280.72/x
  3. Step 3: Cross multiply
    625,761.52x = 863,546.76 × 339,280.72
  4. Step 4: Simplify right side
    625,761.52x = 292,984,766,486.47
  5. Step 5: Solve for x
    x = 292,984,766,486.47/625,761.52
  6. Step 6: Final answer
    x = 468,205.15

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1.5x scale

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.