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Finding the Fourth Proportional to 120,561.44, 166,371.96 and 66,845.96

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Solution

The fourth proportional to 120,561.44, 166,371.96 and 66,845.96 is: 92,245.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,561.44 : 166,371.96 = 66,845.96 : x
  2. Step 2: Convert to fraction form
    120,561.44/166,371.96 = 66,845.96/x
  3. Step 3: Cross multiply
    120,561.44x = 166,371.96 × 66,845.96
  4. Step 4: Simplify right side
    120,561.44x = 11,121,293,383.28
  5. Step 5: Solve for x
    x = 11,121,293,383.28/120,561.44
  6. Step 6: Final answer
    x = 92,245.86

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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.