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Finding the Third Proportional to 992.25 and 1,071

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Solution

The third proportional to 992.25 and 1,071 is: 1,156

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.25 : 1,071 = 1,071 : x
  2. Step 2: Convert to fraction form
    992.25/1,071 = 1,071/x
  3. Step 3: Cross multiply
    992.25x = 1,071 × 1,071
  4. Step 4: Simplify right side
    992.25x = 1,147,041
  5. Step 5: Solve for x
    x = 1,147,041/992.25
  6. Step 6: Final answer
    x = 1,156

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.