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Finding the Fourth Proportional to 609,456.27, 840,770.51 and 394,665.54

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Solution

The fourth proportional to 609,456.27, 840,770.51 and 394,665.54 is: 544,457.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,456.27 : 840,770.51 = 394,665.54 : x
  2. Step 2: Convert to fraction form
    609,456.27/840,770.51 = 394,665.54/x
  3. Step 3: Cross multiply
    609,456.27x = 840,770.51 × 394,665.54
  4. Step 4: Simplify right side
    609,456.27x = 331,823,147,345.23
  5. Step 5: Solve for x
    x = 331,823,147,345.23/609,456.27
  6. Step 6: Final answer
    x = 544,457.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.