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Finding the Fourth Proportional to 478,617.20, 717,787.56 and 163,067.12

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Solution

The fourth proportional to 478,617.20, 717,787.56 and 163,067.12 is: 244,553.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,617.20 : 717,787.56 = 163,067.12 : x
  2. Step 2: Convert to fraction form
    478,617.20/717,787.56 = 163,067.12/x
  3. Step 3: Cross multiply
    478,617.20x = 717,787.56 × 163,067.12
  4. Step 4: Simplify right side
    478,617.20x = 117,047,550,181.03
  5. Step 5: Solve for x
    x = 117,047,550,181.03/478,617.20
  6. Step 6: Final answer
    x = 244,553.58

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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.