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Finding the Fourth Proportional to 283,591.98, 391,365.27 and 156,275.78

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Solution

The fourth proportional to 283,591.98, 391,365.27 and 156,275.78 is: 215,665.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,591.98 : 391,365.27 = 156,275.78 : x
  2. Step 2: Convert to fraction form
    283,591.98/391,365.27 = 156,275.78/x
  3. Step 3: Cross multiply
    283,591.98x = 391,365.27 × 156,275.78
  4. Step 4: Simplify right side
    283,591.98x = 61,160,910,877.33
  5. Step 5: Solve for x
    x = 61,160,910,877.33/283,591.98
  6. Step 6: Final answer
    x = 215,665.16

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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.