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Finding the Fourth Proportional to 2,726.88, 4,092.78 and 2,551.92

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Solution

The fourth proportional to 2,726.88, 4,092.78 and 2,551.92 is: 3,830.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.88 : 4,092.78 = 2,551.92 : x
  2. Step 2: Convert to fraction form
    2,726.88/4,092.78 = 2,551.92/x
  3. Step 3: Cross multiply
    2,726.88x = 4,092.78 × 2,551.92
  4. Step 4: Simplify right side
    2,726.88x = 10,444,447.14
  5. Step 5: Solve for x
    x = 10,444,447.14/2,726.88
  6. Step 6: Final answer
    x = 3,830.18

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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.