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Finding the Fourth Proportional to 120,881.92, 166,797.48 and 67,165.96

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Solution

The fourth proportional to 120,881.92, 166,797.48 and 67,165.96 is: 92,678.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,881.92 : 166,797.48 = 67,165.96 : x
  2. Step 2: Convert to fraction form
    120,881.92/166,797.48 = 67,165.96/x
  3. Step 3: Cross multiply
    120,881.92x = 166,797.48 × 67,165.96
  4. Step 4: Simplify right side
    120,881.92x = 11,203,112,869.78
  5. Step 5: Solve for x
    x = 11,203,112,869.78/120,881.92
  6. Step 6: Final answer
    x = 92,678.15

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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.