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Finding the Fourth Proportional to 27,213.30, 40,818.87 and 7,491.31

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Solution

The fourth proportional to 27,213.30, 40,818.87 and 7,491.31 is: 11,236.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,213.30 : 40,818.87 = 7,491.31 : x
  2. Step 2: Convert to fraction form
    27,213.30/40,818.87 = 7,491.31/x
  3. Step 3: Cross multiply
    27,213.30x = 40,818.87 × 7,491.31
  4. Step 4: Simplify right side
    27,213.30x = 305,786,706.97
  5. Step 5: Solve for x
    x = 305,786,706.97/27,213.30
  6. Step 6: Final answer
    x = 11,236.66

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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.