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Finding the Fourth Proportional to 16,805.80, 25,187.10 and 6,951.88

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Solution

The fourth proportional to 16,805.80, 25,187.10 and 6,951.88 is: 10,418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805.80 : 25,187.10 = 6,951.88 : x
  2. Step 2: Convert to fraction form
    16,805.80/25,187.10 = 6,951.88/x
  3. Step 3: Cross multiply
    16,805.80x = 25,187.10 × 6,951.88
  4. Step 4: Simplify right side
    16,805.80x = 175,097,696.75
  5. Step 5: Solve for x
    x = 175,097,696.75/16,805.80
  6. Step 6: Final answer
    x = 10,418.88

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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.