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Finding the Fourth Proportional to 120,958.74, 166,936.83 and 67,249.14

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Solution

The fourth proportional to 120,958.74, 166,936.83 and 67,249.14 is: 92,811.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,958.74 : 166,936.83 = 67,249.14 : x
  2. Step 2: Convert to fraction form
    120,958.74/166,936.83 = 67,249.14/x
  3. Step 3: Cross multiply
    120,958.74x = 166,936.83 × 67,249.14
  4. Step 4: Simplify right side
    120,958.74x = 11,226,358,251.83
  5. Step 5: Solve for x
    x = 11,226,358,251.83/120,958.74
  6. Step 6: Final answer
    x = 92,811.47

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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.