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Finding the Third Proportional to 1,135.50 and 1,995

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Solution

The third proportional to 1,135.50 and 1,995 is: 3,505.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.50 : 1,995 = 1,995 : x
  2. Step 2: Convert to fraction form
    1,135.50/1,995 = 1,995/x
  3. Step 3: Cross multiply
    1,135.50x = 1,995 × 1,995
  4. Step 4: Simplify right side
    1,135.50x = 3,980,025
  5. Step 5: Solve for x
    x = 3,980,025/1,135.50
  6. Step 6: Final answer
    x = 3,505.09

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.