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Finding the Fourth Proportional to 4,891.06, 6,748.95 and 2,794.78

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Solution

The fourth proportional to 4,891.06, 6,748.95 and 2,794.78 is: 3,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.06 : 6,748.95 = 2,794.78 : x
  2. Step 2: Convert to fraction form
    4,891.06/6,748.95 = 2,794.78/x
  3. Step 3: Cross multiply
    4,891.06x = 6,748.95 × 2,794.78
  4. Step 4: Simplify right side
    4,891.06x = 18,861,830.48
  5. Step 5: Solve for x
    x = 18,861,830.48/4,891.06
  6. Step 6: Final answer
    x = 3,856.39

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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.