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Finding the Third Proportional to 643,453 and 1,398,956

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Solution

The third proportional to 643,453 and 1,398,956 is: 3,041,524.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,453 : 1,398,956 = 1,398,956 : x
  2. Step 2: Convert to fraction form
    643,453/1,398,956 = 1,398,956/x
  3. Step 3: Cross multiply
    643,453x = 1,398,956 × 1,398,956
  4. Step 4: Simplify right side
    643,453x = 1,957,077,889,936
  5. Step 5: Solve for x
    x = 1,957,077,889,936/643,453
  6. Step 6: Final answer
    x = 3,041,524.23

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.