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Finding the Fourth Proportional to 71,763.75, 106,887.56 and 68,016.69

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Solution

The fourth proportional to 71,763.75, 106,887.56 and 68,016.69 is: 101,306.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,763.75 : 106,887.56 = 68,016.69 : x
  2. Step 2: Convert to fraction form
    71,763.75/106,887.56 = 68,016.69/x
  3. Step 3: Cross multiply
    71,763.75x = 106,887.56 × 68,016.69
  4. Step 4: Simplify right side
    71,763.75x = 7,270,137,693.29
  5. Step 5: Solve for x
    x = 7,270,137,693.29/71,763.75
  6. Step 6: Final answer
    x = 101,306.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.