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Finding the Fourth Proportional to 121,074.77, 167,074.92 and 67,357.80

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Solution

The fourth proportional to 121,074.77, 167,074.92 and 67,357.80 is: 92,949.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,074.77 : 167,074.92 = 67,357.80 : x
  2. Step 2: Convert to fraction form
    121,074.77/167,074.92 = 67,357.80/x
  3. Step 3: Cross multiply
    121,074.77x = 167,074.92 × 67,357.80
  4. Step 4: Simplify right side
    121,074.77x = 11,253,799,046.38
  5. Step 5: Solve for x
    x = 11,253,799,046.38/121,074.77
  6. Step 6: Final answer
    x = 92,949.17

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1.5x scale

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.