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Finding the Fourth Proportional to 5,718.78, 7,891.96 and 3,329.35

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Solution

The fourth proportional to 5,718.78, 7,891.96 and 3,329.35 is: 4,594.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.78 : 7,891.96 = 3,329.35 : x
  2. Step 2: Convert to fraction form
    5,718.78/7,891.96 = 3,329.35/x
  3. Step 3: Cross multiply
    5,718.78x = 7,891.96 × 3,329.35
  4. Step 4: Simplify right side
    5,718.78x = 26,275,097.03
  5. Step 5: Solve for x
    x = 26,275,097.03/5,718.78
  6. Step 6: Final answer
    x = 4,594.53

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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.