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Finding the Fourth Proportional to 19,521.84, 26,940.16 and 11,568

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Solution

The fourth proportional to 19,521.84, 26,940.16 and 11,568 is: 15,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,521.84 : 26,940.16 = 11,568 : x
  2. Step 2: Convert to fraction form
    19,521.84/26,940.16 = 11,568/x
  3. Step 3: Cross multiply
    19,521.84x = 26,940.16 × 11,568
  4. Step 4: Simplify right side
    19,521.84x = 311,643,770.88
  5. Step 5: Solve for x
    x = 311,643,770.88/19,521.84
  6. Step 6: Final answer
    x = 15,963.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.