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Finding the Third Proportional to 931 and 2,516

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Solution

The third proportional to 931 and 2,516 is: 6,799.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    931 : 2,516 = 2,516 : x
  2. Step 2: Convert to fraction form
    931/2,516 = 2,516/x
  3. Step 3: Cross multiply
    931x = 2,516 × 2,516
  4. Step 4: Simplify right side
    931x = 6,330,256
  5. Step 5: Solve for x
    x = 6,330,256/931
  6. Step 6: Final answer
    x = 6,799.42

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.