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Finding the Fourth Proportional to 325,963.20, 488,944.80 and 247,231.20

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Solution

The fourth proportional to 325,963.20, 488,944.80 and 247,231.20 is: 370,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,963.20 : 488,944.80 = 247,231.20 : x
  2. Step 2: Convert to fraction form
    325,963.20/488,944.80 = 247,231.20/x
  3. Step 3: Cross multiply
    325,963.20x = 488,944.80 × 247,231.20
  4. Step 4: Simplify right side
    325,963.20x = 120,882,409,637.76
  5. Step 5: Solve for x
    x = 120,882,409,637.76/325,963.20
  6. Step 6: Final answer
    x = 370,846.80

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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.