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Finding the Fourth Proportional to 17,266.80, 25,835.40 and 15,711.60

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Solution

The fourth proportional to 17,266.80, 25,835.40 and 15,711.60 is: 23,508.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,266.80 : 25,835.40 = 15,711.60 : x
  2. Step 2: Convert to fraction form
    17,266.80/25,835.40 = 15,711.60/x
  3. Step 3: Cross multiply
    17,266.80x = 25,835.40 × 15,711.60
  4. Step 4: Simplify right side
    17,266.80x = 405,915,470.64
  5. Step 5: Solve for x
    x = 405,915,470.64/17,266.80
  6. Step 6: Final answer
    x = 23,508.44

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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.