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Finding the Fourth Proportional to 283,877.44, 391,768.80 and 156,553.28

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Solution

The fourth proportional to 283,877.44, 391,768.80 and 156,553.28 is: 216,053.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,877.44 : 391,768.80 = 156,553.28 : x
  2. Step 2: Convert to fraction form
    283,877.44/391,768.80 = 156,553.28/x
  3. Step 3: Cross multiply
    283,877.44x = 391,768.80 × 156,553.28
  4. Step 4: Simplify right side
    283,877.44x = 61,332,690,641.66
  5. Step 5: Solve for x
    x = 61,332,690,641.66/283,877.44
  6. Step 6: Final answer
    x = 216,053.42

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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.