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Finding the Fourth Proportional to 699,337.71, 965,084.63 and 393,414.31

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Solution

The fourth proportional to 699,337.71, 965,084.63 and 393,414.31 is: 542,910.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,337.71 : 965,084.63 = 393,414.31 : x
  2. Step 2: Convert to fraction form
    699,337.71/965,084.63 = 393,414.31/x
  3. Step 3: Cross multiply
    699,337.71x = 965,084.63 × 393,414.31
  4. Step 4: Simplify right side
    699,337.71x = 379,678,097,010.56
  5. Step 5: Solve for x
    x = 379,678,097,010.56/699,337.71
  6. Step 6: Final answer
    x = 542,910.95

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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.