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Finding the Fourth Proportional to 67,912.91, 101,869.28 and 25,792.91

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Solution

The fourth proportional to 67,912.91, 101,869.28 and 25,792.91 is: 38,689.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,912.91 : 101,869.28 = 25,792.91 : x
  2. Step 2: Convert to fraction form
    67,912.91/101,869.28 = 25,792.91/x
  3. Step 3: Cross multiply
    67,912.91x = 101,869.28 × 25,792.91
  4. Step 4: Simplify right side
    67,912.91x = 2,627,505,041.84
  5. Step 5: Solve for x
    x = 2,627,505,041.84/67,912.91
  6. Step 6: Final answer
    x = 38,689.33

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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.