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Finding the Fourth Proportional to 27,391.68, 40,992.48 and 16,857

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Solution

The fourth proportional to 27,391.68, 40,992.48 and 16,857 is: 25,227.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,391.68 : 40,992.48 = 16,857 : x
  2. Step 2: Convert to fraction form
    27,391.68/40,992.48 = 16,857/x
  3. Step 3: Cross multiply
    27,391.68x = 40,992.48 × 16,857
  4. Step 4: Simplify right side
    27,391.68x = 691,010,235.36
  5. Step 5: Solve for x
    x = 691,010,235.36/27,391.68
  6. Step 6: Final answer
    x = 25,227.01

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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.