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Finding the Fourth Proportional to 325,787.20, 488,389.20 and 126,041.20

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Solution

The fourth proportional to 325,787.20, 488,389.20 and 126,041.20 is: 188,948.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,787.20 : 488,389.20 = 126,041.20 : x
  2. Step 2: Convert to fraction form
    325,787.20/488,389.20 = 126,041.20/x
  3. Step 3: Cross multiply
    325,787.20x = 488,389.20 × 126,041.20
  4. Step 4: Simplify right side
    325,787.20x = 61,557,160,835.04
  5. Step 5: Solve for x
    x = 61,557,160,835.04/325,787.20
  6. Step 6: Final answer
    x = 188,948.99

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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.