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Finding the Fourth Proportional to 60,781.73, 91,161.05 and 25,745.99

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Solution

The fourth proportional to 60,781.73, 91,161.05 and 25,745.99 is: 38,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,781.73 : 91,161.05 = 25,745.99 : x
  2. Step 2: Convert to fraction form
    60,781.73/91,161.05 = 25,745.99/x
  3. Step 3: Cross multiply
    60,781.73x = 91,161.05 × 25,745.99
  4. Step 4: Simplify right side
    60,781.73x = 2,347,030,897.15
  5. Step 5: Solve for x
    x = 2,347,030,897.15/60,781.73
  6. Step 6: Final answer
    x = 38,614.09

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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.