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Finding the Fourth Proportional to 18,418.52, 27,604.02 and 6,717.80

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Solution

The fourth proportional to 18,418.52, 27,604.02 and 6,717.80 is: 10,068.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.52 : 27,604.02 = 6,717.80 : x
  2. Step 2: Convert to fraction form
    18,418.52/27,604.02 = 6,717.80/x
  3. Step 3: Cross multiply
    18,418.52x = 27,604.02 × 6,717.80
  4. Step 4: Simplify right side
    18,418.52x = 185,438,285.56
  5. Step 5: Solve for x
    x = 185,438,285.56/18,418.52
  6. Step 6: Final answer
    x = 10,068.03

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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.