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Finding the Fourth Proportional to 168,198.75, 252,298.13 and 68,413.23

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Solution

The fourth proportional to 168,198.75, 252,298.13 and 68,413.23 is: 102,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,198.75 : 252,298.13 = 68,413.23 : x
  2. Step 2: Convert to fraction form
    168,198.75/252,298.13 = 68,413.23/x
  3. Step 3: Cross multiply
    168,198.75x = 252,298.13 × 68,413.23
  4. Step 4: Simplify right side
    168,198.75x = 17,260,529,654.19
  5. Step 5: Solve for x
    x = 17,260,529,654.19/168,198.75
  6. Step 6: Final answer
    x = 102,619.85

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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.