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Finding the Fourth Proportional to 132,067.20, 197,809.20 and 108,739.20

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Solution

The fourth proportional to 132,067.20, 197,809.20 and 108,739.20 is: 162,868.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,067.20 : 197,809.20 = 108,739.20 : x
  2. Step 2: Convert to fraction form
    132,067.20/197,809.20 = 108,739.20/x
  3. Step 3: Cross multiply
    132,067.20x = 197,809.20 × 108,739.20
  4. Step 4: Simplify right side
    132,067.20x = 21,509,614,160.64
  5. Step 5: Solve for x
    x = 21,509,614,160.64/132,067.20
  6. Step 6: Final answer
    x = 162,868.71

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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.