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Finding the Fourth Proportional to 20,083.20, 30,124.80 and 6,232.20

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Solution

The fourth proportional to 20,083.20, 30,124.80 and 6,232.20 is: 9,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,083.20 : 30,124.80 = 6,232.20 : x
  2. Step 2: Convert to fraction form
    20,083.20/30,124.80 = 6,232.20/x
  3. Step 3: Cross multiply
    20,083.20x = 30,124.80 × 6,232.20
  4. Step 4: Simplify right side
    20,083.20x = 187,743,778.56
  5. Step 5: Solve for x
    x = 187,743,778.56/20,083.20
  6. Step 6: Final answer
    x = 9,348.30

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1.5x scale

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.