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Finding the Third Proportional to 664 and 1,004

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Solution

The third proportional to 664 and 1,004 is: 1,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664 : 1,004 = 1,004 : x
  2. Step 2: Convert to fraction form
    664/1,004 = 1,004/x
  3. Step 3: Cross multiply
    664x = 1,004 × 1,004
  4. Step 4: Simplify right side
    664x = 1,008,016
  5. Step 5: Solve for x
    x = 1,008,016/664
  6. Step 6: Final answer
    x = 1,518.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.