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Finding the Fourth Proportional to 159,728.20, 239,620.99 and 54,522.57

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Solution

The fourth proportional to 159,728.20, 239,620.99 and 54,522.57 is: 81,793.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,728.20 : 239,620.99 = 54,522.57 : x
  2. Step 2: Convert to fraction form
    159,728.20/239,620.99 = 54,522.57/x
  3. Step 3: Cross multiply
    159,728.20x = 239,620.99 × 54,522.57
  4. Step 4: Simplify right side
    159,728.20x = 13,064,750,866.33
  5. Step 5: Solve for x
    x = 13,064,750,866.33/159,728.20
  6. Step 6: Final answer
    x = 81,793.64

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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.