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Finding the Third Proportional to 621,580 and 877,356

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Solution

The third proportional to 621,580 and 877,356 is: 1,238,382.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,580 : 877,356 = 877,356 : x
  2. Step 2: Convert to fraction form
    621,580/877,356 = 877,356/x
  3. Step 3: Cross multiply
    621,580x = 877,356 × 877,356
  4. Step 4: Simplify right side
    621,580x = 769,753,550,736
  5. Step 5: Solve for x
    x = 769,753,550,736/621,580
  6. Step 6: Final answer
    x = 1,238,382.11

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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.