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Finding the Fourth Proportional to 16,991.00, 25,486.50 and 5,305.22

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Solution

The fourth proportional to 16,991.00, 25,486.50 and 5,305.22 is: 7,957.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991.00 : 25,486.50 = 5,305.22 : x
  2. Step 2: Convert to fraction form
    16,991.00/25,486.50 = 5,305.22/x
  3. Step 3: Cross multiply
    16,991.00x = 25,486.50 × 5,305.22
  4. Step 4: Simplify right side
    16,991.00x = 135,211,335.57
  5. Step 5: Solve for x
    x = 135,211,335.57/16,991.00
  6. Step 6: Final answer
    x = 7,957.82

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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.