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Finding the Fourth Proportional to 18,525.25, 27,789.11 and 6,515.96

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Solution

The fourth proportional to 18,525.25, 27,789.11 and 6,515.96 is: 9,774.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,525.25 : 27,789.11 = 6,515.96 : x
  2. Step 2: Convert to fraction form
    18,525.25/27,789.11 = 6,515.96/x
  3. Step 3: Cross multiply
    18,525.25x = 27,789.11 × 6,515.96
  4. Step 4: Simplify right side
    18,525.25x = 181,072,775.07
  5. Step 5: Solve for x
    x = 181,072,775.07/18,525.25
  6. Step 6: Final answer
    x = 9,774.38

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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.