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Finding the Fourth Proportional to 57,393.62, 86,083.95 and 19,947.38

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Solution

The fourth proportional to 57,393.62, 86,083.95 and 19,947.38 is: 29,918.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,393.62 : 86,083.95 = 19,947.38 : x
  2. Step 2: Convert to fraction form
    57,393.62/86,083.95 = 19,947.38/x
  3. Step 3: Cross multiply
    57,393.62x = 86,083.95 × 19,947.38
  4. Step 4: Simplify right side
    57,393.62x = 1,717,149,262.55
  5. Step 5: Solve for x
    x = 1,717,149,262.55/57,393.62
  6. Step 6: Final answer
    x = 29,918.82

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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.