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Finding the Third Proportional to 393,614 and 626,622

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Solution

The third proportional to 393,614 and 626,622 is: 997,563.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,614 : 626,622 = 626,622 : x
  2. Step 2: Convert to fraction form
    393,614/626,622 = 626,622/x
  3. Step 3: Cross multiply
    393,614x = 626,622 × 626,622
  4. Step 4: Simplify right side
    393,614x = 392,655,130,884
  5. Step 5: Solve for x
    x = 392,655,130,884/393,614
  6. Step 6: Final answer
    x = 997,563.94

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.