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Finding the Third Proportional to 5,222 and 8,076

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Solution

The third proportional to 5,222 and 8,076 is: 12,489.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,222 : 8,076 = 8,076 : x
  2. Step 2: Convert to fraction form
    5,222/8,076 = 8,076/x
  3. Step 3: Cross multiply
    5,222x = 8,076 × 8,076
  4. Step 4: Simplify right side
    5,222x = 65,221,776
  5. Step 5: Solve for x
    x = 65,221,776/5,222
  6. Step 6: Final answer
    x = 12,489.81

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.