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Finding the Fourth Proportional to 68,802.50, 103,208.61 and 27,249.50

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Solution

The fourth proportional to 68,802.50, 103,208.61 and 27,249.50 is: 40,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,802.50 : 103,208.61 = 27,249.50 : x
  2. Step 2: Convert to fraction form
    68,802.50/103,208.61 = 27,249.50/x
  3. Step 3: Cross multiply
    68,802.50x = 103,208.61 × 27,249.50
  4. Step 4: Simplify right side
    68,802.50x = 2,812,383,018.20
  5. Step 5: Solve for x
    x = 2,812,383,018.20/68,802.50
  6. Step 6: Final answer
    x = 40,876.17

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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.