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Finding the Fourth Proportional to 159,636.44, 239,511.90 and 68,413.56

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Solution

The fourth proportional to 159,636.44, 239,511.90 and 68,413.56 is: 102,644.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,636.44 : 239,511.90 = 68,413.56 : x
  2. Step 2: Convert to fraction form
    159,636.44/239,511.90 = 68,413.56/x
  3. Step 3: Cross multiply
    159,636.44x = 239,511.90 × 68,413.56
  4. Step 4: Simplify right side
    159,636.44x = 16,385,861,741.36
  5. Step 5: Solve for x
    x = 16,385,861,741.36/159,636.44
  6. Step 6: Final answer
    x = 102,644.87

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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.