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Finding the Third Proportional to 189,292 and 416,992

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Solution

The third proportional to 189,292 and 416,992 is: 918,593.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,292 : 416,992 = 416,992 : x
  2. Step 2: Convert to fraction form
    189,292/416,992 = 416,992/x
  3. Step 3: Cross multiply
    189,292x = 416,992 × 416,992
  4. Step 4: Simplify right side
    189,292x = 173,882,328,064
  5. Step 5: Solve for x
    x = 173,882,328,064/189,292
  6. Step 6: Final answer
    x = 918,593.12

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.