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Finding the Fourth Proportional to 283,776.71, 391,614.75 and 156,456.86

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Solution

The fourth proportional to 283,776.71, 391,614.75 and 156,456.86 is: 215,912.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,776.71 : 391,614.75 = 156,456.86 : x
  2. Step 2: Convert to fraction form
    283,776.71/391,614.75 = 156,456.86/x
  3. Step 3: Cross multiply
    283,776.71x = 391,614.75 × 156,456.86
  4. Step 4: Simplify right side
    283,776.71x = 61,270,812,156.61
  5. Step 5: Solve for x
    x = 61,270,812,156.61/283,776.71
  6. Step 6: Final answer
    x = 215,912.06

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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.