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Finding the Fourth Proportional to 121,072.51, 167,063.61 and 67,350.61

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Solution

The fourth proportional to 121,072.51, 167,063.61 and 67,350.61 is: 92,934.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,072.51 : 167,063.61 = 67,350.61 : x
  2. Step 2: Convert to fraction form
    121,072.51/167,063.61 = 67,350.61/x
  3. Step 3: Cross multiply
    121,072.51x = 167,063.61 × 67,350.61
  4. Step 4: Simplify right side
    121,072.51x = 11,251,836,042.30
  5. Step 5: Solve for x
    x = 11,251,836,042.30/121,072.51
  6. Step 6: Final answer
    x = 92,934.69

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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.