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Finding the Third Proportional to 5,365 and 8,207

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Solution

The third proportional to 5,365 and 8,207 is: 12,554.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,365 : 8,207 = 8,207 : x
  2. Step 2: Convert to fraction form
    5,365/8,207 = 8,207/x
  3. Step 3: Cross multiply
    5,365x = 8,207 × 8,207
  4. Step 4: Simplify right side
    5,365x = 67,354,849
  5. Step 5: Solve for x
    x = 67,354,849/5,365
  6. Step 6: Final answer
    x = 12,554.49

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.