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Finding the Fourth Proportional to 18,467.88, 27,698.49 and 5,317.02

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Solution

The fourth proportional to 18,467.88, 27,698.49 and 5,317.02 is: 7,974.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,467.88 : 27,698.49 = 5,317.02 : x
  2. Step 2: Convert to fraction form
    18,467.88/27,698.49 = 5,317.02/x
  3. Step 3: Cross multiply
    18,467.88x = 27,698.49 × 5,317.02
  4. Step 4: Simplify right side
    18,467.88x = 147,273,425.30
  5. Step 5: Solve for x
    x = 147,273,425.30/18,467.88
  6. Step 6: Final answer
    x = 7,974.57

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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.