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Finding the Fourth Proportional to 18,804.71, 25,949.67 and 11,246.65

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Solution

The fourth proportional to 18,804.71, 25,949.67 and 11,246.65 is: 15,519.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,804.71 : 25,949.67 = 11,246.65 : x
  2. Step 2: Convert to fraction form
    18,804.71/25,949.67 = 11,246.65/x
  3. Step 3: Cross multiply
    18,804.71x = 25,949.67 × 11,246.65
  4. Step 4: Simplify right side
    18,804.71x = 291,846,749.06
  5. Step 5: Solve for x
    x = 291,846,749.06/18,804.71
  6. Step 6: Final answer
    x = 15,519.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.