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Finding the Fourth Proportional to 80,242.81, 110,734.28 and 43,448.85

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Solution

The fourth proportional to 80,242.81, 110,734.28 and 43,448.85 is: 59,958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,242.81 : 110,734.28 = 43,448.85 : x
  2. Step 2: Convert to fraction form
    80,242.81/110,734.28 = 43,448.85/x
  3. Step 3: Cross multiply
    80,242.81x = 110,734.28 × 43,448.85
  4. Step 4: Simplify right side
    80,242.81x = 4,811,277,121.58
  5. Step 5: Solve for x
    x = 4,811,277,121.58/80,242.81
  6. Step 6: Final answer
    x = 59,958.98

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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.