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Finding the Fourth Proportional to 223,919.20, 335,871.60 and 74,166.40

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Solution

The fourth proportional to 223,919.20, 335,871.60 and 74,166.40 is: 111,247.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,919.20 : 335,871.60 = 74,166.40 : x
  2. Step 2: Convert to fraction form
    223,919.20/335,871.60 = 74,166.40/x
  3. Step 3: Cross multiply
    223,919.20x = 335,871.60 × 74,166.40
  4. Step 4: Simplify right side
    223,919.20x = 24,910,387,434.24
  5. Step 5: Solve for x
    x = 24,910,387,434.24/223,919.20
  6. Step 6: Final answer
    x = 111,247.22

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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.