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Finding the Fourth Proportional to 2,310.86, 3,465.87 and 667

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Solution

The fourth proportional to 2,310.86, 3,465.87 and 667 is: 1,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.86 : 3,465.87 = 667 : x
  2. Step 2: Convert to fraction form
    2,310.86/3,465.87 = 667/x
  3. Step 3: Cross multiply
    2,310.86x = 3,465.87 × 667
  4. Step 4: Simplify right side
    2,310.86x = 2,311,735.29
  5. Step 5: Solve for x
    x = 2,311,735.29/2,310.86
  6. Step 6: Final answer
    x = 1,000.38

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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.