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Finding the Third Proportional to 393,796.69 and 863,875.13

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Solution

The third proportional to 393,796.69 and 863,875.13 is: 1,895,090.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,796.69 : 863,875.13 = 863,875.13 : x
  2. Step 2: Convert to fraction form
    393,796.69/863,875.13 = 863,875.13/x
  3. Step 3: Cross multiply
    393,796.69x = 863,875.13 × 863,875.13
  4. Step 4: Simplify right side
    393,796.69x = 746,280,231,593.77
  5. Step 5: Solve for x
    x = 746,280,231,593.77/393,796.69
  6. Step 6: Final answer
    x = 1,895,090.17

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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.