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Finding the Fourth Proportional to 68,936.67, 103,389.62 and 26,802.90

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Solution

The fourth proportional to 68,936.67, 103,389.62 and 26,802.90 is: 40,198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,936.67 : 103,389.62 = 26,802.90 : x
  2. Step 2: Convert to fraction form
    68,936.67/103,389.62 = 26,802.90/x
  3. Step 3: Cross multiply
    68,936.67x = 103,389.62 × 26,802.90
  4. Step 4: Simplify right side
    68,936.67x = 2,771,141,511.88
  5. Step 5: Solve for x
    x = 2,771,141,511.88/68,936.67
  6. Step 6: Final answer
    x = 40,198.37

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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.