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Finding the Fourth Proportional to 57,572.70, 86,371.20 and 18,133.80

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Solution

The fourth proportional to 57,572.70, 86,371.20 and 18,133.80 is: 27,204.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,572.70 : 86,371.20 = 18,133.80 : x
  2. Step 2: Convert to fraction form
    57,572.70/86,371.20 = 18,133.80/x
  3. Step 3: Cross multiply
    57,572.70x = 86,371.20 × 18,133.80
  4. Step 4: Simplify right side
    57,572.70x = 1,566,238,066.56
  5. Step 5: Solve for x
    x = 1,566,238,066.56/57,572.70
  6. Step 6: Final answer
    x = 27,204.53

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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.