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Finding the Fourth Proportional to 198,195.64, 273,395.59 and 126,494.84

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Solution

The fourth proportional to 198,195.64, 273,395.59 and 126,494.84 is: 174,489.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,195.64 : 273,395.59 = 126,494.84 : x
  2. Step 2: Convert to fraction form
    198,195.64/273,395.59 = 126,494.84/x
  3. Step 3: Cross multiply
    198,195.64x = 273,395.59 × 126,494.84
  4. Step 4: Simplify right side
    198,195.64x = 34,583,131,413.76
  5. Step 5: Solve for x
    x = 34,583,131,413.76/198,195.64
  6. Step 6: Final answer
    x = 174,489.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.