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Finding the Fourth Proportional to 192,691.24, 288,965.10 and 66,296.20

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Solution

The fourth proportional to 192,691.24, 288,965.10 and 66,296.20 is: 99,419.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,691.24 : 288,965.10 = 66,296.20 : x
  2. Step 2: Convert to fraction form
    192,691.24/288,965.10 = 66,296.20/x
  3. Step 3: Cross multiply
    192,691.24x = 288,965.10 × 66,296.20
  4. Step 4: Simplify right side
    192,691.24x = 19,157,288,062.62
  5. Step 5: Solve for x
    x = 19,157,288,062.62/192,691.24
  6. Step 6: Final answer
    x = 99,419.61

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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.