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Finding the Third Proportional to 621,590 and 877,372

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Solution

The third proportional to 621,590 and 877,372 is: 1,238,407.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,590 : 877,372 = 877,372 : x
  2. Step 2: Convert to fraction form
    621,590/877,372 = 877,372/x
  3. Step 3: Cross multiply
    621,590x = 877,372 × 877,372
  4. Step 4: Simplify right side
    621,590x = 769,781,626,384
  5. Step 5: Solve for x
    x = 769,781,626,384/621,590
  6. Step 6: Final answer
    x = 1,238,407.35

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.