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Finding the Third Proportional to 855 and 933

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Solution

The third proportional to 855 and 933 is: 1,018.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    855 : 933 = 933 : x
  2. Step 2: Convert to fraction form
    855/933 = 933/x
  3. Step 3: Cross multiply
    855x = 933 × 933
  4. Step 4: Simplify right side
    855x = 870,489
  5. Step 5: Solve for x
    x = 870,489/855
  6. Step 6: Final answer
    x = 1,018.12

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.