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Finding the Fourth Proportional to 18,434.65, 27,653.77 and 7,338.75

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Solution

The fourth proportional to 18,434.65, 27,653.77 and 7,338.75 is: 11,008.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,434.65 : 27,653.77 = 7,338.75 : x
  2. Step 2: Convert to fraction form
    18,434.65/27,653.77 = 7,338.75/x
  3. Step 3: Cross multiply
    18,434.65x = 27,653.77 × 7,338.75
  4. Step 4: Simplify right side
    18,434.65x = 202,944,010.06
  5. Step 5: Solve for x
    x = 202,944,010.06/18,434.65
  6. Step 6: Final answer
    x = 11,008.83

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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.