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Finding the Third Proportional to 6,931 and 9,087

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Solution

The third proportional to 6,931 and 9,087 is: 11,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931 : 9,087 = 9,087 : x
  2. Step 2: Convert to fraction form
    6,931/9,087 = 9,087/x
  3. Step 3: Cross multiply
    6,931x = 9,087 × 9,087
  4. Step 4: Simplify right side
    6,931x = 82,573,569
  5. Step 5: Solve for x
    x = 82,573,569/6,931
  6. Step 6: Final answer
    x = 11,913.66

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.