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Finding the Third Proportional to 665.25 and 1,011

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Solution

The third proportional to 665.25 and 1,011 is: 1,536.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.25 : 1,011 = 1,011 : x
  2. Step 2: Convert to fraction form
    665.25/1,011 = 1,011/x
  3. Step 3: Cross multiply
    665.25x = 1,011 × 1,011
  4. Step 4: Simplify right side
    665.25x = 1,022,121
  5. Step 5: Solve for x
    x = 1,022,121/665.25
  6. Step 6: Final answer
    x = 1,536.45

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.