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Finding the Third Proportional to 393,360 and 861,786

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Solution

The third proportional to 393,360 and 861,786 is: 1,888,029.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,360 : 861,786 = 861,786 : x
  2. Step 2: Convert to fraction form
    393,360/861,786 = 861,786/x
  3. Step 3: Cross multiply
    393,360x = 861,786 × 861,786
  4. Step 4: Simplify right side
    393,360x = 742,675,109,796
  5. Step 5: Solve for x
    x = 742,675,109,796/393,360
  6. Step 6: Final answer
    x = 1,888,029.06

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.