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Finding the Fourth Proportional to 110,871.15, 166,425.13 and 47,722.55

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Solution

The fourth proportional to 110,871.15, 166,425.13 and 47,722.55 is: 71,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,871.15 : 166,425.13 = 47,722.55 : x
  2. Step 2: Convert to fraction form
    110,871.15/166,425.13 = 47,722.55/x
  3. Step 3: Cross multiply
    110,871.15x = 166,425.13 × 47,722.55
  4. Step 4: Simplify right side
    110,871.15x = 7,942,231,587.68
  5. Step 5: Solve for x
    x = 7,942,231,587.68/110,871.15
  6. Step 6: Final answer
    x = 71,634.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.