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Finding the Fourth Proportional to 67,906.43, 101,865.09 and 25,806.68

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Solution

The fourth proportional to 67,906.43, 101,865.09 and 25,806.68 is: 38,712.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,906.43 : 101,865.09 = 25,806.68 : x
  2. Step 2: Convert to fraction form
    67,906.43/101,865.09 = 25,806.68/x
  3. Step 3: Cross multiply
    67,906.43x = 101,865.09 × 25,806.68
  4. Step 4: Simplify right side
    67,906.43x = 2,628,799,780.80
  5. Step 5: Solve for x
    x = 2,628,799,780.80/67,906.43
  6. Step 6: Final answer
    x = 38,712.09

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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.