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Finding the Third Proportional to 586 and 1,261

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Solution

The third proportional to 586 and 1,261 is: 2,713.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    586 : 1,261 = 1,261 : x
  2. Step 2: Convert to fraction form
    586/1,261 = 1,261/x
  3. Step 3: Cross multiply
    586x = 1,261 × 1,261
  4. Step 4: Simplify right side
    586x = 1,590,121
  5. Step 5: Solve for x
    x = 1,590,121/586
  6. Step 6: Final answer
    x = 2,713.52

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.