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Finding the Fourth Proportional to 192,568.86, 288,995.22 and 91,367.31

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Solution

The fourth proportional to 192,568.86, 288,995.22 and 91,367.31 is: 137,118.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,568.86 : 288,995.22 = 91,367.31 : x
  2. Step 2: Convert to fraction form
    192,568.86/288,995.22 = 91,367.31/x
  3. Step 3: Cross multiply
    192,568.86x = 288,995.22 × 91,367.31
  4. Step 4: Simplify right side
    192,568.86x = 26,404,715,854.26
  5. Step 5: Solve for x
    x = 26,404,715,854.26/192,568.86
  6. Step 6: Final answer
    x = 137,118.31

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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.