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Finding the Fourth Proportional to 73,744.80, 110,617.20 and 68,042.40

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Solution

The fourth proportional to 73,744.80, 110,617.20 and 68,042.40 is: 102,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,744.80 : 110,617.20 = 68,042.40 : x
  2. Step 2: Convert to fraction form
    73,744.80/110,617.20 = 68,042.40/x
  3. Step 3: Cross multiply
    73,744.80x = 110,617.20 × 68,042.40
  4. Step 4: Simplify right side
    73,744.80x = 7,526,659,769.28
  5. Step 5: Solve for x
    x = 7,526,659,769.28/73,744.80
  6. Step 6: Final answer
    x = 102,063.60

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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.