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Finding the Fourth Proportional to 121,092.76, 167,108.82 and 67,380.04

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Solution

The fourth proportional to 121,092.76, 167,108.82 and 67,380.04 is: 92,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,092.76 : 167,108.82 = 67,380.04 : x
  2. Step 2: Convert to fraction form
    121,092.76/167,108.82 = 67,380.04/x
  3. Step 3: Cross multiply
    121,092.76x = 167,108.82 × 67,380.04
  4. Step 4: Simplify right side
    121,092.76x = 11,259,798,975.95
  5. Step 5: Solve for x
    x = 11,259,798,975.95/121,092.76
  6. Step 6: Final answer
    x = 92,984.91

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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.