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Finding the Fourth Proportional to 664,277.80, 996,416.70 and 658,372.90

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Solution

The fourth proportional to 664,277.80, 996,416.70 and 658,372.90 is: 987,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,277.80 : 996,416.70 = 658,372.90 : x
  2. Step 2: Convert to fraction form
    664,277.80/996,416.70 = 658,372.90/x
  3. Step 3: Cross multiply
    664,277.80x = 996,416.70 × 658,372.90
  4. Step 4: Simplify right side
    664,277.80x = 656,013,752,387.43
  5. Step 5: Solve for x
    x = 656,013,752,387.43/664,277.80
  6. Step 6: Final answer
    x = 987,559.35

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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.