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Finding the Fourth Proportional to 62,605.72, 93,912 and 15,859

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Solution

The fourth proportional to 62,605.72, 93,912 and 15,859 is: 23,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,605.72 : 93,912 = 15,859 : x
  2. Step 2: Convert to fraction form
    62,605.72/93,912 = 15,859/x
  3. Step 3: Cross multiply
    62,605.72x = 93,912 × 15,859
  4. Step 4: Simplify right side
    62,605.72x = 1,489,350,408
  5. Step 5: Solve for x
    x = 1,489,350,408/62,605.72
  6. Step 6: Final answer
    x = 23,789.37

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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.