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Finding the Fourth Proportional to 121,354.78, 167,470.38 and 67,643.18

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Solution

The fourth proportional to 121,354.78, 167,470.38 and 67,643.18 is: 93,348.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,354.78 : 167,470.38 = 67,643.18 : x
  2. Step 2: Convert to fraction form
    121,354.78/167,470.38 = 67,643.18/x
  3. Step 3: Cross multiply
    121,354.78x = 167,470.38 × 67,643.18
  4. Step 4: Simplify right side
    121,354.78x = 11,328,229,059.01
  5. Step 5: Solve for x
    x = 11,328,229,059.01/121,354.78
  6. Step 6: Final answer
    x = 93,348.03

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