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Finding the Third Proportional to 920 and 1,202

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Solution

The third proportional to 920 and 1,202 is: 1,570.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    920 : 1,202 = 1,202 : x
  2. Step 2: Convert to fraction form
    920/1,202 = 1,202/x
  3. Step 3: Cross multiply
    920x = 1,202 × 1,202
  4. Step 4: Simplify right side
    920x = 1,444,804
  5. Step 5: Solve for x
    x = 1,444,804/920
  6. Step 6: Final answer
    x = 1,570.44

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.