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Finding the Fourth Proportional to 68,936.57, 103,340.21 and 26,843.66

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Solution

The fourth proportional to 68,936.57, 103,340.21 and 26,843.66 is: 40,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,936.57 : 103,340.21 = 26,843.66 : x
  2. Step 2: Convert to fraction form
    68,936.57/103,340.21 = 26,843.66/x
  3. Step 3: Cross multiply
    68,936.57x = 103,340.21 × 26,843.66
  4. Step 4: Simplify right side
    68,936.57x = 2,774,028,810.65
  5. Step 5: Solve for x
    x = 2,774,028,810.65/68,936.57
  6. Step 6: Final answer
    x = 40,240.31

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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.