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Finding the Fourth Proportional to 325,305.20, 487,007.40 and 231,993.20

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Solution

The fourth proportional to 325,305.20, 487,007.40 and 231,993.20 is: 347,312.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,305.20 : 487,007.40 = 231,993.20 : x
  2. Step 2: Convert to fraction form
    325,305.20/487,007.40 = 231,993.20/x
  3. Step 3: Cross multiply
    325,305.20x = 487,007.40 × 231,993.20
  4. Step 4: Simplify right side
    325,305.20x = 112,982,405,149.68
  5. Step 5: Solve for x
    x = 112,982,405,149.68/325,305.20
  6. Step 6: Final answer
    x = 347,312.02

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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.