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Finding the Third Proportional to 991 and 1,416

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Solution

The third proportional to 991 and 1,416 is: 2,023.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    991 : 1,416 = 1,416 : x
  2. Step 2: Convert to fraction form
    991/1,416 = 1,416/x
  3. Step 3: Cross multiply
    991x = 1,416 × 1,416
  4. Step 4: Simplify right side
    991x = 2,005,056
  5. Step 5: Solve for x
    x = 2,005,056/991
  6. Step 6: Final answer
    x = 2,023.27

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.