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Finding the Fourth Proportional to 325,661.22, 449,412.61 and 198,336.81

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Solution

The fourth proportional to 325,661.22, 449,412.61 and 198,336.81 is: 273,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,661.22 : 449,412.61 = 198,336.81 : x
  2. Step 2: Convert to fraction form
    325,661.22/449,412.61 = 198,336.81/x
  3. Step 3: Cross multiply
    325,661.22x = 449,412.61 × 198,336.81
  4. Step 4: Simplify right side
    325,661.22x = 89,135,062,930.02
  5. Step 5: Solve for x
    x = 89,135,062,930.02/325,661.22
  6. Step 6: Final answer
    x = 273,704.88

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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.