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Finding the Fourth Proportional to 22,808.88, 31,481.49 and 13,380.48

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Solution

The fourth proportional to 22,808.88, 31,481.49 and 13,380.48 is: 18,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,808.88 : 31,481.49 = 13,380.48 : x
  2. Step 2: Convert to fraction form
    22,808.88/31,481.49 = 13,380.48/x
  3. Step 3: Cross multiply
    22,808.88x = 31,481.49 × 13,380.48
  4. Step 4: Simplify right side
    22,808.88x = 421,237,447.32
  5. Step 5: Solve for x
    x = 421,237,447.32/22,808.88
  6. Step 6: Final answer
    x = 18,468.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.