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Finding the Third Proportional to 480.88 and 991.75

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Solution

The third proportional to 480.88 and 991.75 is: 2,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.88 : 991.75 = 991.75 : x
  2. Step 2: Convert to fraction form
    480.88/991.75 = 991.75/x
  3. Step 3: Cross multiply
    480.88x = 991.75 × 991.75
  4. Step 4: Simplify right side
    480.88x = 983,568.06
  5. Step 5: Solve for x
    x = 983,568.06/480.88
  6. Step 6: Final answer
    x = 2,045.37

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.