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Finding the Fourth Proportional to 339,993.86, 469,207.38 and 196,726.19

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Solution

The fourth proportional to 339,993.86, 469,207.38 and 196,726.19 is: 271,491.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,993.86 : 469,207.38 = 196,726.19 : x
  2. Step 2: Convert to fraction form
    339,993.86/469,207.38 = 196,726.19/x
  3. Step 3: Cross multiply
    339,993.86x = 469,207.38 × 196,726.19
  4. Step 4: Simplify right side
    339,993.86x = 92,305,378,578.97
  5. Step 5: Solve for x
    x = 92,305,378,578.97/339,993.86
  6. Step 6: Final answer
    x = 271,491.31

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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.