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Finding the Fourth Proportional to 18,021.65, 27,033.83 and 4,873.82

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Solution

The fourth proportional to 18,021.65, 27,033.83 and 4,873.82 is: 7,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,021.65 : 27,033.83 = 4,873.82 : x
  2. Step 2: Convert to fraction form
    18,021.65/27,033.83 = 4,873.82/x
  3. Step 3: Cross multiply
    18,021.65x = 27,033.83 × 4,873.82
  4. Step 4: Simplify right side
    18,021.65x = 131,758,101.10
  5. Step 5: Solve for x
    x = 131,758,101.10/18,021.65
  6. Step 6: Final answer
    x = 7,311.10

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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.