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Finding the Fourth Proportional to 57,764.68, 86,660.87 and 18,321.78

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Solution

The fourth proportional to 57,764.68, 86,660.87 and 18,321.78 is: 27,487.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,764.68 : 86,660.87 = 18,321.78 : x
  2. Step 2: Convert to fraction form
    57,764.68/86,660.87 = 18,321.78/x
  3. Step 3: Cross multiply
    57,764.68x = 86,660.87 × 18,321.78
  4. Step 4: Simplify right side
    57,764.68x = 1,587,781,394.75
  5. Step 5: Solve for x
    x = 1,587,781,394.75/57,764.68
  6. Step 6: Final answer
    x = 27,487.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.