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Finding the Fourth Proportional to 16,990.97, 25,486.52 and 8,107.02

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Solution

The fourth proportional to 16,990.97, 25,486.52 and 8,107.02 is: 12,160.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.97 : 25,486.52 = 8,107.02 : x
  2. Step 2: Convert to fraction form
    16,990.97/25,486.52 = 8,107.02/x
  3. Step 3: Cross multiply
    16,990.97x = 25,486.52 × 8,107.02
  4. Step 4: Simplify right side
    16,990.97x = 206,619,686.84
  5. Step 5: Solve for x
    x = 206,619,686.84/16,990.97
  6. Step 6: Final answer
    x = 12,160.56

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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.