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Finding the Fourth Proportional to 5,700.87, 7,867.26 and 3,311

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Solution

The fourth proportional to 5,700.87, 7,867.26 and 3,311 is: 4,569.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,700.87 : 7,867.26 = 3,311 : x
  2. Step 2: Convert to fraction form
    5,700.87/7,867.26 = 3,311/x
  3. Step 3: Cross multiply
    5,700.87x = 7,867.26 × 3,311
  4. Step 4: Simplify right side
    5,700.87x = 26,048,497.86
  5. Step 5: Solve for x
    x = 26,048,497.86/5,700.87
  6. Step 6: Final answer
    x = 4,569.21

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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.