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Finding the Fourth Proportional to 68,015.92, 102,031.64 and 18,098.04

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Solution

The fourth proportional to 68,015.92, 102,031.64 and 18,098.04 is: 27,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,015.92 : 102,031.64 = 18,098.04 : x
  2. Step 2: Convert to fraction form
    68,015.92/102,031.64 = 18,098.04/x
  3. Step 3: Cross multiply
    68,015.92x = 102,031.64 × 18,098.04
  4. Step 4: Simplify right side
    68,015.92x = 1,846,572,701.99
  5. Step 5: Solve for x
    x = 1,846,572,701.99/68,015.92
  6. Step 6: Final answer
    x = 27,149.12

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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.