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Finding the Third Proportional to 7,058 and 12,406

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Solution

The third proportional to 7,058 and 12,406 is: 21,806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,058 : 12,406 = 12,406 : x
  2. Step 2: Convert to fraction form
    7,058/12,406 = 12,406/x
  3. Step 3: Cross multiply
    7,058x = 12,406 × 12,406
  4. Step 4: Simplify right side
    7,058x = 153,908,836
  5. Step 5: Solve for x
    x = 153,908,836/7,058
  6. Step 6: Final answer
    x = 21,806.30

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.