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Finding the Third Proportional to 2,666.50 and 4,000

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Solution

The third proportional to 2,666.50 and 4,000 is: 6,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.50 : 4,000 = 4,000 : x
  2. Step 2: Convert to fraction form
    2,666.50/4,000 = 4,000/x
  3. Step 3: Cross multiply
    2,666.50x = 4,000 × 4,000
  4. Step 4: Simplify right side
    2,666.50x = 16,000,000
  5. Step 5: Solve for x
    x = 16,000,000/2,666.50
  6. Step 6: Final answer
    x = 6,000.38

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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.