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Finding the Third Proportional to 919 and 1,361

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Solution

The third proportional to 919 and 1,361 is: 2,015.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    919 : 1,361 = 1,361 : x
  2. Step 2: Convert to fraction form
    919/1,361 = 1,361/x
  3. Step 3: Cross multiply
    919x = 1,361 × 1,361
  4. Step 4: Simplify right side
    919x = 1,852,321
  5. Step 5: Solve for x
    x = 1,852,321/919
  6. Step 6: Final answer
    x = 2,015.58

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.