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Finding the Fourth Proportional to 18,474.75, 27,718.03 and 6,620.52

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Solution

The fourth proportional to 18,474.75, 27,718.03 and 6,620.52 is: 9,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.75 : 27,718.03 = 6,620.52 : x
  2. Step 2: Convert to fraction form
    18,474.75/27,718.03 = 6,620.52/x
  3. Step 3: Cross multiply
    18,474.75x = 27,718.03 × 6,620.52
  4. Step 4: Simplify right side
    18,474.75x = 183,507,771.98
  5. Step 5: Solve for x
    x = 183,507,771.98/18,474.75
  6. Step 6: Final answer
    x = 9,932.90

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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.