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Finding the Third Proportional to 1,058 and 1,368

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Solution

The third proportional to 1,058 and 1,368 is: 1,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058 : 1,368 = 1,368 : x
  2. Step 2: Convert to fraction form
    1,058/1,368 = 1,368/x
  3. Step 3: Cross multiply
    1,058x = 1,368 × 1,368
  4. Step 4: Simplify right side
    1,058x = 1,871,424
  5. Step 5: Solve for x
    x = 1,871,424/1,058
  6. Step 6: Final answer
    x = 1,768.83

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.