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Finding the Fourth Proportional to 283,759.62, 391,591.31 and 156,439.77

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Solution

The fourth proportional to 283,759.62, 391,591.31 and 156,439.77 is: 215,888.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,759.62 : 391,591.31 = 156,439.77 : x
  2. Step 2: Convert to fraction form
    283,759.62/391,591.31 = 156,439.77/x
  3. Step 3: Cross multiply
    283,759.62x = 391,591.31 × 156,439.77
  4. Step 4: Simplify right side
    283,759.62x = 61,260,453,688.20
  5. Step 5: Solve for x
    x = 61,260,453,688.20/283,759.62
  6. Step 6: Final answer
    x = 215,888.55

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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.