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Finding the Fourth Proportional to 68,649.20, 102,956.52 and 27,096.56

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Solution

The fourth proportional to 68,649.20, 102,956.52 and 27,096.56 is: 40,638.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,649.20 : 102,956.52 = 27,096.56 : x
  2. Step 2: Convert to fraction form
    68,649.20/102,956.52 = 27,096.56/x
  3. Step 3: Cross multiply
    68,649.20x = 102,956.52 × 27,096.56
  4. Step 4: Simplify right side
    68,649.20x = 2,789,767,521.57
  5. Step 5: Solve for x
    x = 2,789,767,521.57/68,649.20
  6. Step 6: Final answer
    x = 40,638.02

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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.