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Finding the Fourth Proportional to 121,675.61, 167,911.36 and 67,227.61

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Solution

The fourth proportional to 121,675.61, 167,911.36 and 67,227.61 is: 92,773.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,675.61 : 167,911.36 = 67,227.61 : x
  2. Step 2: Convert to fraction form
    121,675.61/167,911.36 = 67,227.61/x
  3. Step 3: Cross multiply
    121,675.61x = 167,911.36 × 67,227.61
  4. Step 4: Simplify right side
    121,675.61x = 11,288,279,466.47
  5. Step 5: Solve for x
    x = 11,288,279,466.47/121,675.61
  6. Step 6: Final answer
    x = 92,773.56

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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.