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Finding the Fourth Proportional to 120,873.56, 166,751.84 and 80,548.04

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Solution

The fourth proportional to 120,873.56, 166,751.84 and 80,548.04 is: 111,120.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,873.56 : 166,751.84 = 80,548.04 : x
  2. Step 2: Convert to fraction form
    120,873.56/166,751.84 = 80,548.04/x
  3. Step 3: Cross multiply
    120,873.56x = 166,751.84 × 80,548.04
  4. Step 4: Simplify right side
    120,873.56x = 13,431,532,641.89
  5. Step 5: Solve for x
    x = 13,431,532,641.89/120,873.56
  6. Step 6: Final answer
    x = 111,120.52

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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.