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Finding the Fourth Proportional to 159,788.70, 239,573.70 and 75,589.20

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Solution

The fourth proportional to 159,788.70, 239,573.70 and 75,589.20 is: 113,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,788.70 : 239,573.70 = 75,589.20 : x
  2. Step 2: Convert to fraction form
    159,788.70/239,573.70 = 75,589.20/x
  3. Step 3: Cross multiply
    159,788.70x = 239,573.70 × 75,589.20
  4. Step 4: Simplify right side
    159,788.70x = 18,109,184,324.04
  5. Step 5: Solve for x
    x = 18,109,184,324.04/159,788.70
  6. Step 6: Final answer
    x = 113,332.07

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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.