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Finding the Fourth Proportional to 283,809.28, 391,659.44 and 156,489.44

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Solution

The fourth proportional to 283,809.28, 391,659.44 and 156,489.44 is: 215,956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,809.28 : 391,659.44 = 156,489.44 : x
  2. Step 2: Convert to fraction form
    283,809.28/391,659.44 = 156,489.44/x
  3. Step 3: Cross multiply
    283,809.28x = 391,659.44 × 156,489.44
  4. Step 4: Simplify right side
    283,809.28x = 61,290,566,436.31
  5. Step 5: Solve for x
    x = 61,290,566,436.31/283,809.28
  6. Step 6: Final answer
    x = 215,956.88

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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.