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Finding the Fourth Proportional to 27,288.29, 40,856.52 and 13,932.44

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Solution

The fourth proportional to 27,288.29, 40,856.52 and 13,932.44 is: 20,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,288.29 : 40,856.52 = 13,932.44 : x
  2. Step 2: Convert to fraction form
    27,288.29/40,856.52 = 13,932.44/x
  3. Step 3: Cross multiply
    27,288.29x = 40,856.52 × 13,932.44
  4. Step 4: Simplify right side
    27,288.29x = 569,231,138.07
  5. Step 5: Solve for x
    x = 569,231,138.07/27,288.29
  6. Step 6: Final answer
    x = 20,859.90

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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.