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Finding the Fourth Proportional to 68,786.80, 103,162.88 and 26,652.42

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Solution

The fourth proportional to 68,786.80, 103,162.88 and 26,652.42 is: 39,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,786.80 : 103,162.88 = 26,652.42 : x
  2. Step 2: Convert to fraction form
    68,786.80/103,162.88 = 26,652.42/x
  3. Step 3: Cross multiply
    68,786.80x = 103,162.88 × 26,652.42
  4. Step 4: Simplify right side
    68,786.80x = 2,749,540,406.17
  5. Step 5: Solve for x
    x = 2,749,540,406.17/68,786.80
  6. Step 6: Final answer
    x = 39,971.92

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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.