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Finding the Fourth Proportional to 240,579.20, 360,868.80 and 74,367.20

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Solution

The fourth proportional to 240,579.20, 360,868.80 and 74,367.20 is: 111,550.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,579.20 : 360,868.80 = 74,367.20 : x
  2. Step 2: Convert to fraction form
    240,579.20/360,868.80 = 74,367.20/x
  3. Step 3: Cross multiply
    240,579.20x = 360,868.80 × 74,367.20
  4. Step 4: Simplify right side
    240,579.20x = 26,836,800,419.02
  5. Step 5: Solve for x
    x = 26,836,800,419.02/240,579.20
  6. Step 6: Final answer
    x = 111,550.79

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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.