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Finding the Third Proportional to 815,543 and 1,918,998

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Solution

The third proportional to 815,543 and 1,918,998 is: 4,515,461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,543 : 1,918,998 = 1,918,998 : x
  2. Step 2: Convert to fraction form
    815,543/1,918,998 = 1,918,998/x
  3. Step 3: Cross multiply
    815,543x = 1,918,998 × 1,918,998
  4. Step 4: Simplify right side
    815,543x = 3,682,553,324,004
  5. Step 5: Solve for x
    x = 3,682,553,324,004/815,543
  6. Step 6: Final answer
    x = 4,515,461.88

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.