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Finding the Third Proportional to 933 and 1,215

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Solution

The third proportional to 933 and 1,215 is: 1,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    933 : 1,215 = 1,215 : x
  2. Step 2: Convert to fraction form
    933/1,215 = 1,215/x
  3. Step 3: Cross multiply
    933x = 1,215 × 1,215
  4. Step 4: Simplify right side
    933x = 1,476,225
  5. Step 5: Solve for x
    x = 1,476,225/933
  6. Step 6: Final answer
    x = 1,582.23

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.