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Finding the Fourth Proportional to 20,636.74, 30,902.73 and 17,296.21

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Solution

The fourth proportional to 20,636.74, 30,902.73 and 17,296.21 is: 25,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.74 : 30,902.73 = 17,296.21 : x
  2. Step 2: Convert to fraction form
    20,636.74/30,902.73 = 17,296.21/x
  3. Step 3: Cross multiply
    20,636.74x = 30,902.73 × 17,296.21
  4. Step 4: Simplify right side
    20,636.74x = 534,500,107.65
  5. Step 5: Solve for x
    x = 534,500,107.65/20,636.74
  6. Step 6: Final answer
    x = 25,900.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.