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Finding the Third Proportional to 991 and 1,595

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Solution

The third proportional to 991 and 1,595 is: 2,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    991 : 1,595 = 1,595 : x
  2. Step 2: Convert to fraction form
    991/1,595 = 1,595/x
  3. Step 3: Cross multiply
    991x = 1,595 × 1,595
  4. Step 4: Simplify right side
    991x = 2,544,025
  5. Step 5: Solve for x
    x = 2,544,025/991
  6. Step 6: Final answer
    x = 2,567.13

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.