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Finding the Fourth Proportional to 20,593.88, 30,872.48 and 7,443.32

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Solution

The fourth proportional to 20,593.88, 30,872.48 and 7,443.32 is: 11,158.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.88 : 30,872.48 = 7,443.32 : x
  2. Step 2: Convert to fraction form
    20,593.88/30,872.48 = 7,443.32/x
  3. Step 3: Cross multiply
    20,593.88x = 30,872.48 × 7,443.32
  4. Step 4: Simplify right side
    20,593.88x = 229,793,787.80
  5. Step 5: Solve for x
    x = 229,793,787.80/20,593.88
  6. Step 6: Final answer
    x = 11,158.36

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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.