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Finding the Fourth Proportional to 84,308.73, 126,525.42 and 39,935.55

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Solution

The fourth proportional to 84,308.73, 126,525.42 and 39,935.55 is: 59,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,308.73 : 126,525.42 = 39,935.55 : x
  2. Step 2: Convert to fraction form
    84,308.73/126,525.42 = 39,935.55/x
  3. Step 3: Cross multiply
    84,308.73x = 126,525.42 × 39,935.55
  4. Step 4: Simplify right side
    84,308.73x = 5,052,862,236.68
  5. Step 5: Solve for x
    x = 5,052,862,236.68/84,308.73
  6. Step 6: Final answer
    x = 59,932.85

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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.