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Finding the Fourth Proportional to 66,575.82, 99,883.80 and 38,489.52

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Solution

The fourth proportional to 66,575.82, 99,883.80 and 38,489.52 is: 57,745.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,575.82 : 99,883.80 = 38,489.52 : x
  2. Step 2: Convert to fraction form
    66,575.82/99,883.80 = 38,489.52/x
  3. Step 3: Cross multiply
    66,575.82x = 99,883.80 × 38,489.52
  4. Step 4: Simplify right side
    66,575.82x = 3,844,479,517.78
  5. Step 5: Solve for x
    x = 3,844,479,517.78/66,575.82
  6. Step 6: Final answer
    x = 57,745.88

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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.