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Finding the Fourth Proportional to 120,879.42, 166,794.03 and 67,163.46

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Solution

The fourth proportional to 120,879.42, 166,794.03 and 67,163.46 is: 92,674.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,879.42 : 166,794.03 = 67,163.46 : x
  2. Step 2: Convert to fraction form
    120,879.42/166,794.03 = 67,163.46/x
  3. Step 3: Cross multiply
    120,879.42x = 166,794.03 × 67,163.46
  4. Step 4: Simplify right side
    120,879.42x = 11,202,464,162.14
  5. Step 5: Solve for x
    x = 11,202,464,162.14/120,879.42
  6. Step 6: Final answer
    x = 92,674.70

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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.