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Finding the Fourth Proportional to 664,288.30, 996,432.45 and 451,711.90

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Solution

The fourth proportional to 664,288.30, 996,432.45 and 451,711.90 is: 677,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,288.30 : 996,432.45 = 451,711.90 : x
  2. Step 2: Convert to fraction form
    664,288.30/996,432.45 = 451,711.90/x
  3. Step 3: Cross multiply
    664,288.30x = 996,432.45 × 451,711.90
  4. Step 4: Simplify right side
    664,288.30x = 450,100,395,211.16
  5. Step 5: Solve for x
    x = 450,100,395,211.16/664,288.30
  6. Step 6: Final answer
    x = 677,567.85

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Double scale
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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.