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Finding the Fourth Proportional to 159,356.15, 238,883.96 and 79,318.44

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Solution

The fourth proportional to 159,356.15, 238,883.96 and 79,318.44 is: 118,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,356.15 : 238,883.96 = 79,318.44 : x
  2. Step 2: Convert to fraction form
    159,356.15/238,883.96 = 79,318.44/x
  3. Step 3: Cross multiply
    159,356.15x = 238,883.96 × 79,318.44
  4. Step 4: Simplify right side
    159,356.15x = 18,947,903,508.09
  5. Step 5: Solve for x
    x = 18,947,903,508.09/159,356.15
  6. Step 6: Final answer
    x = 118,902.87

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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.