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Finding the Third Proportional to 921,315 and 1,993,542

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Solution

The third proportional to 921,315 and 1,993,542 is: 4,313,627.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,315 : 1,993,542 = 1,993,542 : x
  2. Step 2: Convert to fraction form
    921,315/1,993,542 = 1,993,542/x
  3. Step 3: Cross multiply
    921,315x = 1,993,542 × 1,993,542
  4. Step 4: Simplify right side
    921,315x = 3,974,209,705,764
  5. Step 5: Solve for x
    x = 3,974,209,705,764/921,315
  6. Step 6: Final answer
    x = 4,313,627.48

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.