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Finding the Third Proportional to 261.75 and 546.75

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Solution

The third proportional to 261.75 and 546.75 is: 1,142.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.75 : 546.75 = 546.75 : x
  2. Step 2: Convert to fraction form
    261.75/546.75 = 546.75/x
  3. Step 3: Cross multiply
    261.75x = 546.75 × 546.75
  4. Step 4: Simplify right side
    261.75x = 298,935.56
  5. Step 5: Solve for x
    x = 298,935.56/261.75
  6. Step 6: Final answer
    x = 1,142.07

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.