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Finding the Fourth Proportional to 159,168.80, 238,755.82 and 53,990.48

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Solution

The fourth proportional to 159,168.80, 238,755.82 and 53,990.48 is: 80,986.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,168.80 : 238,755.82 = 53,990.48 : x
  2. Step 2: Convert to fraction form
    159,168.80/238,755.82 = 53,990.48/x
  3. Step 3: Cross multiply
    159,168.80x = 238,755.82 × 53,990.48
  4. Step 4: Simplify right side
    159,168.80x = 12,890,541,324.59
  5. Step 5: Solve for x
    x = 12,890,541,324.59/159,168.80
  6. Step 6: Final answer
    x = 80,986.61

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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.