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Finding the Fourth Proportional to 57,472.60, 86,213.76 and 15,359.08

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Solution

The fourth proportional to 57,472.60, 86,213.76 and 15,359.08 is: 23,039.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,472.60 : 86,213.76 = 15,359.08 : x
  2. Step 2: Convert to fraction form
    57,472.60/86,213.76 = 15,359.08/x
  3. Step 3: Cross multiply
    57,472.60x = 86,213.76 × 15,359.08
  4. Step 4: Simplify right side
    57,472.60x = 1,324,164,036.94
  5. Step 5: Solve for x
    x = 1,324,164,036.94/57,472.60
  6. Step 6: Final answer
    x = 23,039.92

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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.