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Finding the Fourth Proportional to 121,348.80, 167,412.24 and 73,584.72

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Solution

The fourth proportional to 121,348.80, 167,412.24 and 73,584.72 is: 101,517.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,348.80 : 167,412.24 = 73,584.72 : x
  2. Step 2: Convert to fraction form
    121,348.80/167,412.24 = 73,584.72/x
  3. Step 3: Cross multiply
    121,348.80x = 167,412.24 × 73,584.72
  4. Step 4: Simplify right side
    121,348.80x = 12,318,982,804.97
  5. Step 5: Solve for x
    x = 12,318,982,804.97/121,348.80
  6. Step 6: Final answer
    x = 101,517.14

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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.