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Finding the Fourth Proportional to 5,782.15, 7,979.31 and 3,264.21

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Solution

The fourth proportional to 5,782.15, 7,979.31 and 3,264.21 is: 4,504.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,782.15 : 7,979.31 = 3,264.21 : x
  2. Step 2: Convert to fraction form
    5,782.15/7,979.31 = 3,264.21/x
  3. Step 3: Cross multiply
    5,782.15x = 7,979.31 × 3,264.21
  4. Step 4: Simplify right side
    5,782.15x = 26,046,121.05
  5. Step 5: Solve for x
    x = 26,046,121.05/5,782.15
  6. Step 6: Final answer
    x = 4,504.57

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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.