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Finding the Fourth Proportional to 68,788.80, 103,197.60 and 27,236.16

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Solution

The fourth proportional to 68,788.80, 103,197.60 and 27,236.16 is: 40,859.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,788.80 : 103,197.60 = 27,236.16 : x
  2. Step 2: Convert to fraction form
    68,788.80/103,197.60 = 27,236.16/x
  3. Step 3: Cross multiply
    68,788.80x = 103,197.60 × 27,236.16
  4. Step 4: Simplify right side
    68,788.80x = 2,810,706,345.22
  5. Step 5: Solve for x
    x = 2,810,706,345.22/68,788.80
  6. Step 6: Final answer
    x = 40,859.94

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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.