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Finding the Fourth Proportional to 120,908.48, 166,850.38 and 67,192.12

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Solution

The fourth proportional to 120,908.48, 166,850.38 and 67,192.12 is: 92,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,908.48 : 166,850.38 = 67,192.12 : x
  2. Step 2: Convert to fraction form
    120,908.48/166,850.38 = 67,192.12/x
  3. Step 3: Cross multiply
    120,908.48x = 166,850.38 × 67,192.12
  4. Step 4: Simplify right side
    120,908.48x = 11,211,030,755.01
  5. Step 5: Solve for x
    x = 11,211,030,755.01/120,908.48
  6. Step 6: Final answer
    x = 92,723.28

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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.