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Finding the Fourth Proportional to 57,472.80, 86,209.12 and 18,032.99

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Solution

The fourth proportional to 57,472.80, 86,209.12 and 18,032.99 is: 27,049.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,472.80 : 86,209.12 = 18,032.99 : x
  2. Step 2: Convert to fraction form
    57,472.80/86,209.12 = 18,032.99/x
  3. Step 3: Cross multiply
    57,472.80x = 86,209.12 × 18,032.99
  4. Step 4: Simplify right side
    57,472.80x = 1,554,608,108.70
  5. Step 5: Solve for x
    x = 1,554,608,108.70/57,472.80
  6. Step 6: Final answer
    x = 27,049.46

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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.