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Finding the Fourth Proportional to 68,788.15, 103,191.41 and 27,225.43

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Solution

The fourth proportional to 68,788.15, 103,191.41 and 27,225.43 is: 40,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,788.15 : 103,191.41 = 27,225.43 : x
  2. Step 2: Convert to fraction form
    68,788.15/103,191.41 = 27,225.43/x
  3. Step 3: Cross multiply
    68,788.15x = 103,191.41 × 27,225.43
  4. Step 4: Simplify right side
    68,788.15x = 2,809,430,373.43
  5. Step 5: Solve for x
    x = 2,809,430,373.43/68,788.15
  6. Step 6: Final answer
    x = 40,841.78

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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.