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Finding the Fourth Proportional to 121,796.74, 168,081.96 and 67,348.99

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Solution

The fourth proportional to 121,796.74, 168,081.96 and 67,348.99 is: 92,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,796.74 : 168,081.96 = 67,348.99 : x
  2. Step 2: Convert to fraction form
    121,796.74/168,081.96 = 67,348.99/x
  3. Step 3: Cross multiply
    121,796.74x = 168,081.96 × 67,348.99
  4. Step 4: Simplify right side
    121,796.74x = 11,320,150,243.22
  5. Step 5: Solve for x
    x = 11,320,150,243.22/121,796.74
  6. Step 6: Final answer
    x = 92,942.97

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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.