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Finding the Fourth Proportional to 16,942.60, 25,413.90 and 7,708.60

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Solution

The fourth proportional to 16,942.60, 25,413.90 and 7,708.60 is: 11,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,942.60 : 25,413.90 = 7,708.60 : x
  2. Step 2: Convert to fraction form
    16,942.60/25,413.90 = 7,708.60/x
  3. Step 3: Cross multiply
    16,942.60x = 25,413.90 × 7,708.60
  4. Step 4: Simplify right side
    16,942.60x = 195,905,589.54
  5. Step 5: Solve for x
    x = 195,905,589.54/16,942.60
  6. Step 6: Final answer
    x = 11,562.90

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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.