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Finding the Fourth Proportional to 111,691.20, 154,132.80 and 63,952.96

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Solution

The fourth proportional to 111,691.20, 154,132.80 and 63,952.96 is: 88,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,691.20 : 154,132.80 = 63,952.96 : x
  2. Step 2: Convert to fraction form
    111,691.20/154,132.80 = 63,952.96/x
  3. Step 3: Cross multiply
    111,691.20x = 154,132.80 × 63,952.96
  4. Step 4: Simplify right side
    111,691.20x = 9,857,248,793.09
  5. Step 5: Solve for x
    x = 9,857,248,793.09/111,691.20
  6. Step 6: Final answer
    x = 88,254.48

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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.