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Finding the Third Proportional to 989.44 and 1,202.06

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Solution

The third proportional to 989.44 and 1,202.06 is: 1,460.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    989.44 : 1,202.06 = 1,202.06 : x
  2. Step 2: Convert to fraction form
    989.44/1,202.06 = 1,202.06/x
  3. Step 3: Cross multiply
    989.44x = 1,202.06 × 1,202.06
  4. Step 4: Simplify right side
    989.44x = 1,444,954.25
  5. Step 5: Solve for x
    x = 1,444,954.25/989.44
  6. Step 6: Final answer
    x = 1,460.38

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.