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Finding the Fourth Proportional to 699,337.65, 965,084.54 and 393,414.24

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Solution

The fourth proportional to 699,337.65, 965,084.54 and 393,414.24 is: 542,910.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,337.65 : 965,084.54 = 393,414.24 : x
  2. Step 2: Convert to fraction form
    699,337.65/965,084.54 = 393,414.24/x
  3. Step 3: Cross multiply
    699,337.65x = 965,084.54 × 393,414.24
  4. Step 4: Simplify right side
    699,337.65x = 379,677,998,872.78
  5. Step 5: Solve for x
    x = 379,677,998,872.78/699,337.65
  6. Step 6: Final answer
    x = 542,910.85

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.