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Finding the Fourth Proportional to 57,224.52, 85,836.84 and 17,781.68

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Solution

The fourth proportional to 57,224.52, 85,836.84 and 17,781.68 is: 26,672.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,224.52 : 85,836.84 = 17,781.68 : x
  2. Step 2: Convert to fraction form
    57,224.52/85,836.84 = 17,781.68/x
  3. Step 3: Cross multiply
    57,224.52x = 85,836.84 × 17,781.68
  4. Step 4: Simplify right side
    57,224.52x = 1,526,323,221.09
  5. Step 5: Solve for x
    x = 1,526,323,221.09/57,224.52
  6. Step 6: Final answer
    x = 26,672.54

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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.