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Finding the Third Proportional to 931 and 2,007

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Solution

The third proportional to 931 and 2,007 is: 4,326.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    931 : 2,007 = 2,007 : x
  2. Step 2: Convert to fraction form
    931/2,007 = 2,007/x
  3. Step 3: Cross multiply
    931x = 2,007 × 2,007
  4. Step 4: Simplify right side
    931x = 4,028,049
  5. Step 5: Solve for x
    x = 4,028,049/931
  6. Step 6: Final answer
    x = 4,326.58

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.