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Finding the Fourth Proportional to 68,871.96, 103,285.44 and 26,749.20

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Solution

The fourth proportional to 68,871.96, 103,285.44 and 26,749.20 is: 40,115.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,871.96 : 103,285.44 = 26,749.20 : x
  2. Step 2: Convert to fraction form
    68,871.96/103,285.44 = 26,749.20/x
  3. Step 3: Cross multiply
    68,871.96x = 103,285.44 × 26,749.20
  4. Step 4: Simplify right side
    68,871.96x = 2,762,802,891.65
  5. Step 5: Solve for x
    x = 2,762,802,891.65/68,871.96
  6. Step 6: Final answer
    x = 40,115.06

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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.