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Finding the Fourth Proportional to 67,991.68, 101,984.28 and 25,881.44

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Solution

The fourth proportional to 67,991.68, 101,984.28 and 25,881.44 is: 38,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,991.68 : 101,984.28 = 25,881.44 : x
  2. Step 2: Convert to fraction form
    67,991.68/101,984.28 = 25,881.44/x
  3. Step 3: Cross multiply
    67,991.68x = 101,984.28 × 25,881.44
  4. Step 4: Simplify right side
    67,991.68x = 2,639,500,023.76
  5. Step 5: Solve for x
    x = 2,639,500,023.76/67,991.68
  6. Step 6: Final answer
    x = 38,820.93

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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.