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Finding the Fourth Proportional to 18,475.18, 27,695.99 and 7,379.50

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Solution

The fourth proportional to 18,475.18, 27,695.99 and 7,379.50 is: 11,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,475.18 : 27,695.99 = 7,379.50 : x
  2. Step 2: Convert to fraction form
    18,475.18/27,695.99 = 7,379.50/x
  3. Step 3: Cross multiply
    18,475.18x = 27,695.99 × 7,379.50
  4. Step 4: Simplify right side
    18,475.18x = 204,382,558.21
  5. Step 5: Solve for x
    x = 204,382,558.21/18,475.18
  6. Step 6: Final answer
    x = 11,062.55

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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.