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Finding the Fourth Proportional to 20,375.46, 30,565.01 and 5,584.46

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Solution

The fourth proportional to 20,375.46, 30,565.01 and 5,584.46 is: 8,377.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.46 : 30,565.01 = 5,584.46 : x
  2. Step 2: Convert to fraction form
    20,375.46/30,565.01 = 5,584.46/x
  3. Step 3: Cross multiply
    20,375.46x = 30,565.01 × 5,584.46
  4. Step 4: Simplify right side
    20,375.46x = 170,688,936.88
  5. Step 5: Solve for x
    x = 170,688,936.88/20,375.46
  6. Step 6: Final answer
    x = 8,377.18

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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.