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Finding the Fourth Proportional to 57,794.60, 86,691.90 and 39,132.20

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Solution

The fourth proportional to 57,794.60, 86,691.90 and 39,132.20 is: 58,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,794.60 : 86,691.90 = 39,132.20 : x
  2. Step 2: Convert to fraction form
    57,794.60/86,691.90 = 39,132.20/x
  3. Step 3: Cross multiply
    57,794.60x = 86,691.90 × 39,132.20
  4. Step 4: Simplify right side
    57,794.60x = 3,392,444,769.18
  5. Step 5: Solve for x
    x = 3,392,444,769.18/57,794.60
  6. Step 6: Final answer
    x = 58,698.30

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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.