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Finding the Third Proportional to 1,058 and 1,646

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Solution

The third proportional to 1,058 and 1,646 is: 2,560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058 : 1,646 = 1,646 : x
  2. Step 2: Convert to fraction form
    1,058/1,646 = 1,646/x
  3. Step 3: Cross multiply
    1,058x = 1,646 × 1,646
  4. Step 4: Simplify right side
    1,058x = 2,709,316
  5. Step 5: Solve for x
    x = 2,709,316/1,058
  6. Step 6: Final answer
    x = 2,560.79

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.