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Finding the Fourth Proportional to 159,835.88, 239,563.15 and 74,331.31

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Solution

The fourth proportional to 159,835.88, 239,563.15 and 74,331.31 is: 111,408.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,835.88 : 239,563.15 = 74,331.31 : x
  2. Step 2: Convert to fraction form
    159,835.88/239,563.15 = 74,331.31/x
  3. Step 3: Cross multiply
    159,835.88x = 239,563.15 × 74,331.31
  4. Step 4: Simplify right side
    159,835.88x = 17,807,042,767.23
  5. Step 5: Solve for x
    x = 17,807,042,767.23/159,835.88
  6. Step 6: Final answer
    x = 111,408.29

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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.