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Finding the Fourth Proportional to 18,493.83, 25,519.41 and 10,940.40

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Solution

The fourth proportional to 18,493.83, 25,519.41 and 10,940.40 is: 15,096.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,493.83 : 25,519.41 = 10,940.40 : x
  2. Step 2: Convert to fraction form
    18,493.83/25,519.41 = 10,940.40/x
  3. Step 3: Cross multiply
    18,493.83x = 25,519.41 × 10,940.40
  4. Step 4: Simplify right side
    18,493.83x = 279,192,553.16
  5. Step 5: Solve for x
    x = 279,192,553.16/18,493.83
  6. Step 6: Final answer
    x = 15,096.52

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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.