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Finding the Fourth Proportional to 325,963.92, 488,187.72 and 316,994.88

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Solution

The fourth proportional to 325,963.92, 488,187.72 and 316,994.88 is: 474,755.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,963.92 : 488,187.72 = 316,994.88 : x
  2. Step 2: Convert to fraction form
    325,963.92/488,187.72 = 316,994.88/x
  3. Step 3: Cross multiply
    325,963.92x = 488,187.72 × 316,994.88
  4. Step 4: Simplify right side
    325,963.92x = 154,753,007,718.87
  5. Step 5: Solve for x
    x = 154,753,007,718.87/325,963.92
  6. Step 6: Final answer
    x = 474,755.02

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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.