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Finding the Fourth Proportional to 121,026.87, 167,012.91 and 67,310.82

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Solution

The fourth proportional to 121,026.87, 167,012.91 and 67,310.82 is: 92,886.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,026.87 : 167,012.91 = 67,310.82 : x
  2. Step 2: Convert to fraction form
    121,026.87/167,012.91 = 67,310.82/x
  3. Step 3: Cross multiply
    121,026.87x = 167,012.91 × 67,310.82
  4. Step 4: Simplify right side
    121,026.87x = 11,241,775,922.69
  5. Step 5: Solve for x
    x = 11,241,775,922.69/121,026.87
  6. Step 6: Final answer
    x = 92,886.61

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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.