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Finding the Third Proportional to 692 and 1,018

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Solution

The third proportional to 692 and 1,018 is: 1,497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    692 : 1,018 = 1,018 : x
  2. Step 2: Convert to fraction form
    692/1,018 = 1,018/x
  3. Step 3: Cross multiply
    692x = 1,018 × 1,018
  4. Step 4: Simplify right side
    692x = 1,036,324
  5. Step 5: Solve for x
    x = 1,036,324/692
  6. Step 6: Final answer
    x = 1,497.58

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.