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Finding the Fourth Proportional to 609,181, 840,553.12 and 394,291.24

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Solution

The fourth proportional to 609,181, 840,553.12 and 394,291.24 is: 544,046.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,181 : 840,553.12 = 394,291.24 : x
  2. Step 2: Convert to fraction form
    609,181/840,553.12 = 394,291.24/x
  3. Step 3: Cross multiply
    609,181x = 840,553.12 × 394,291.24
  4. Step 4: Simplify right side
    609,181x = 331,422,731,970.67
  5. Step 5: Solve for x
    x = 331,422,731,970.67/609,181
  6. Step 6: Final answer
    x = 544,046.40

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1.5x scale

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.