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Finding the Fourth Proportional to 71,199.90, 98,251.92 and 39,366.68

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Solution

The fourth proportional to 71,199.90, 98,251.92 and 39,366.68 is: 54,323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,199.90 : 98,251.92 = 39,366.68 : x
  2. Step 2: Convert to fraction form
    71,199.90/98,251.92 = 39,366.68/x
  3. Step 3: Cross multiply
    71,199.90x = 98,251.92 × 39,366.68
  4. Step 4: Simplify right side
    71,199.90x = 3,867,851,894.03
  5. Step 5: Solve for x
    x = 3,867,851,894.03/71,199.90
  6. Step 6: Final answer
    x = 54,323.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.