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Finding the Third Proportional to 535 and 1,121

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Solution

The third proportional to 535 and 1,121 is: 2,348.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    535 : 1,121 = 1,121 : x
  2. Step 2: Convert to fraction form
    535/1,121 = 1,121/x
  3. Step 3: Cross multiply
    535x = 1,121 × 1,121
  4. Step 4: Simplify right side
    535x = 1,256,641
  5. Step 5: Solve for x
    x = 1,256,641/535
  6. Step 6: Final answer
    x = 2,348.86

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.