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Finding the Fourth Proportional to 159,647.18, 239,401.37 and 45,769.91

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Solution

The fourth proportional to 159,647.18, 239,401.37 and 45,769.91 is: 68,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,647.18 : 239,401.37 = 45,769.91 : x
  2. Step 2: Convert to fraction form
    159,647.18/239,401.37 = 45,769.91/x
  3. Step 3: Cross multiply
    159,647.18x = 239,401.37 × 45,769.91
  4. Step 4: Simplify right side
    159,647.18x = 10,957,378,076.19
  5. Step 5: Solve for x
    x = 10,957,378,076.19/159,647.18
  6. Step 6: Final answer
    x = 68,634.96

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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.