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Finding the Fourth Proportional to 20,508.65, 30,763.13 and 7,361.14

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Solution

The fourth proportional to 20,508.65, 30,763.13 and 7,361.14 is: 11,041.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.65 : 30,763.13 = 7,361.14 : x
  2. Step 2: Convert to fraction form
    20,508.65/30,763.13 = 7,361.14/x
  3. Step 3: Cross multiply
    20,508.65x = 30,763.13 × 7,361.14
  4. Step 4: Simplify right side
    20,508.65x = 226,451,620.66
  5. Step 5: Solve for x
    x = 226,451,620.66/20,508.65
  6. Step 6: Final answer
    x = 11,041.76

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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.