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Finding the Third Proportional to 5,716 and 6,900

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Solution

The third proportional to 5,716 and 6,900 is: 8,329.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,716 : 6,900 = 6,900 : x
  2. Step 2: Convert to fraction form
    5,716/6,900 = 6,900/x
  3. Step 3: Cross multiply
    5,716x = 6,900 × 6,900
  4. Step 4: Simplify right side
    5,716x = 47,610,000
  5. Step 5: Solve for x
    x = 47,610,000/5,716
  6. Step 6: Final answer
    x = 8,329.25

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.