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Finding the Fourth Proportional to 121,447.98, 167,589.42 and 67,736.04

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Solution

The fourth proportional to 121,447.98, 167,589.42 and 67,736.04 is: 93,470.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,447.98 : 167,589.42 = 67,736.04 : x
  2. Step 2: Convert to fraction form
    121,447.98/167,589.42 = 67,736.04/x
  3. Step 3: Cross multiply
    121,447.98x = 167,589.42 × 67,736.04
  4. Step 4: Simplify right side
    121,447.98x = 11,351,843,656.70
  5. Step 5: Solve for x
    x = 11,351,843,656.70/121,447.98
  6. Step 6: Final answer
    x = 93,470.83

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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.