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Finding the Fourth Proportional to 120,879.28, 181,304.52 and 32,139.28

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Solution

The fourth proportional to 120,879.28, 181,304.52 and 32,139.28 is: 48,205.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,879.28 : 181,304.52 = 32,139.28 : x
  2. Step 2: Convert to fraction form
    120,879.28/181,304.52 = 32,139.28/x
  3. Step 3: Cross multiply
    120,879.28x = 181,304.52 × 32,139.28
  4. Step 4: Simplify right side
    120,879.28x = 5,826,996,733.55
  5. Step 5: Solve for x
    x = 5,826,996,733.55/120,879.28
  6. Step 6: Final answer
    x = 48,205.09

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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.