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Finding the Third Proportional to 574 and 1,261

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Solution

The third proportional to 574 and 1,261 is: 2,770.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    574 : 1,261 = 1,261 : x
  2. Step 2: Convert to fraction form
    574/1,261 = 1,261/x
  3. Step 3: Cross multiply
    574x = 1,261 × 1,261
  4. Step 4: Simplify right side
    574x = 1,590,121
  5. Step 5: Solve for x
    x = 1,590,121/574
  6. Step 6: Final answer
    x = 2,770.25

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.