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Finding the Third Proportional to 393,840 and 590,616

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Solution

The third proportional to 393,840 and 590,616 is: 885,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,840 : 590,616 = 590,616 : x
  2. Step 2: Convert to fraction form
    393,840/590,616 = 590,616/x
  3. Step 3: Cross multiply
    393,840x = 590,616 × 590,616
  4. Step 4: Simplify right side
    393,840x = 348,827,259,456
  5. Step 5: Solve for x
    x = 348,827,259,456/393,840
  6. Step 6: Final answer
    x = 885,708.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.