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Finding the Third Proportional to 989 and 2,537

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Solution

The third proportional to 989 and 2,537 is: 6,507.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    989 : 2,537 = 2,537 : x
  2. Step 2: Convert to fraction form
    989/2,537 = 2,537/x
  3. Step 3: Cross multiply
    989x = 2,537 × 2,537
  4. Step 4: Simplify right side
    989x = 6,436,369
  5. Step 5: Solve for x
    x = 6,436,369/989
  6. Step 6: Final answer
    x = 6,507.96

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Why These Related Problems?

These problems maintain the same ratio (2.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.