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Finding the Fourth Proportional to 283,759.74, 391,591.44 and 156,439.89

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Solution

The fourth proportional to 283,759.74, 391,591.44 and 156,439.89 is: 215,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,759.74 : 391,591.44 = 156,439.89 : x
  2. Step 2: Convert to fraction form
    283,759.74/391,591.44 = 156,439.89/x
  3. Step 3: Cross multiply
    283,759.74x = 391,591.44 × 156,439.89
  4. Step 4: Simplify right side
    283,759.74x = 61,260,521,798.54
  5. Step 5: Solve for x
    x = 61,260,521,798.54/283,759.74
  6. Step 6: Final answer
    x = 215,888.70

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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.