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Finding the Fourth Proportional to 521,769.90, 782,654.85 and 416,793.90

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Solution

The fourth proportional to 521,769.90, 782,654.85 and 416,793.90 is: 625,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,769.90 : 782,654.85 = 416,793.90 : x
  2. Step 2: Convert to fraction form
    521,769.90/782,654.85 = 416,793.90/x
  3. Step 3: Cross multiply
    521,769.90x = 782,654.85 × 416,793.90
  4. Step 4: Simplify right side
    521,769.90x = 326,205,767,285.42
  5. Step 5: Solve for x
    x = 326,205,767,285.42/521,769.90
  6. Step 6: Final answer
    x = 625,190.85

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.