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Finding the Fourth Proportional to 17,859.92, 26,787.24 and 4,713.21

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Solution

The fourth proportional to 17,859.92, 26,787.24 and 4,713.21 is: 7,069.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,859.92 : 26,787.24 = 4,713.21 : x
  2. Step 2: Convert to fraction form
    17,859.92/26,787.24 = 4,713.21/x
  3. Step 3: Cross multiply
    17,859.92x = 26,787.24 × 4,713.21
  4. Step 4: Simplify right side
    17,859.92x = 126,253,887.44
  5. Step 5: Solve for x
    x = 126,253,887.44/17,859.92
  6. Step 6: Final answer
    x = 7,069.12

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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.