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Finding the Fourth Proportional to 115,809.15, 173,743.68 and 67,818.29

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Solution

The fourth proportional to 115,809.15, 173,743.68 and 67,818.29 is: 101,744.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,809.15 : 173,743.68 = 67,818.29 : x
  2. Step 2: Convert to fraction form
    115,809.15/173,743.68 = 67,818.29/x
  3. Step 3: Cross multiply
    115,809.15x = 173,743.68 × 67,818.29
  4. Step 4: Simplify right side
    115,809.15x = 11,782,998,804.41
  5. Step 5: Solve for x
    x = 11,782,998,804.41/115,809.15
  6. Step 6: Final answer
    x = 101,744.97

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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.