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Finding the Third Proportional to 671.63 and 1,062

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Solution

The third proportional to 671.63 and 1,062 is: 1,679.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.63 : 1,062 = 1,062 : x
  2. Step 2: Convert to fraction form
    671.63/1,062 = 1,062/x
  3. Step 3: Cross multiply
    671.63x = 1,062 × 1,062
  4. Step 4: Simplify right side
    671.63x = 1,127,844
  5. Step 5: Solve for x
    x = 1,127,844/671.63
  6. Step 6: Final answer
    x = 1,679.28

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.