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Finding the Fourth Proportional to 16,696.80, 25,052.40 and 8,488.80

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Solution

The fourth proportional to 16,696.80, 25,052.40 and 8,488.80 is: 12,736.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,696.80 : 25,052.40 = 8,488.80 : x
  2. Step 2: Convert to fraction form
    16,696.80/25,052.40 = 8,488.80/x
  3. Step 3: Cross multiply
    16,696.80x = 25,052.40 × 8,488.80
  4. Step 4: Simplify right side
    16,696.80x = 212,664,813.12
  5. Step 5: Solve for x
    x = 212,664,813.12/16,696.80
  6. Step 6: Final answer
    x = 12,736.86

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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.