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Finding the Fourth Proportional to 120,996.76, 166,979.41 and 67,284.04

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Solution

The fourth proportional to 120,996.76, 166,979.41 and 67,284.04 is: 92,854.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,996.76 : 166,979.41 = 67,284.04 : x
  2. Step 2: Convert to fraction form
    120,996.76/166,979.41 = 67,284.04/x
  3. Step 3: Cross multiply
    120,996.76x = 166,979.41 × 67,284.04
  4. Step 4: Simplify right side
    120,996.76x = 11,235,049,301.62
  5. Step 5: Solve for x
    x = 11,235,049,301.62/120,996.76
  6. Step 6: Final answer
    x = 92,854.13

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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.