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Finding the Fourth Proportional to 18,493.22, 25,515.06 and 10,940.42

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Solution

The fourth proportional to 18,493.22, 25,515.06 and 10,940.42 is: 15,094.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.22 : 25,515.06 = 10,940.42 : x
  2. Step 2: Convert to fraction form
    18,493.22/25,515.06 = 10,940.42/x
  3. Step 3: Cross multiply
    18,493.22x = 25,515.06 × 10,940.42
  4. Step 4: Simplify right side
    18,493.22x = 279,145,472.73
  5. Step 5: Solve for x
    x = 279,145,472.73/18,493.22
  6. Step 6: Final answer
    x = 15,094.48

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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.