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Finding the Fourth Proportional to 119,799.20, 179,698.80 and 106,320.80

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Solution

The fourth proportional to 119,799.20, 179,698.80 and 106,320.80 is: 159,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,799.20 : 179,698.80 = 106,320.80 : x
  2. Step 2: Convert to fraction form
    119,799.20/179,698.80 = 106,320.80/x
  3. Step 3: Cross multiply
    119,799.20x = 179,698.80 × 106,320.80
  4. Step 4: Simplify right side
    119,799.20x = 19,105,720,175.04
  5. Step 5: Solve for x
    x = 19,105,720,175.04/119,799.20
  6. Step 6: Final answer
    x = 159,481.20

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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.