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Finding the Third Proportional to 6,318 and 7,724

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Solution

The third proportional to 6,318 and 7,724 is: 9,442.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318 : 7,724 = 7,724 : x
  2. Step 2: Convert to fraction form
    6,318/7,724 = 7,724/x
  3. Step 3: Cross multiply
    6,318x = 7,724 × 7,724
  4. Step 4: Simplify right side
    6,318x = 59,660,176
  5. Step 5: Solve for x
    x = 59,660,176/6,318
  6. Step 6: Final answer
    x = 9,442.89

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.