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Finding the Fourth Proportional to 684,885.27, 945,058.86 and 394,591.80

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Solution

The fourth proportional to 684,885.27, 945,058.86 and 394,591.80 is: 544,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,885.27 : 945,058.86 = 394,591.80 : x
  2. Step 2: Convert to fraction form
    684,885.27/945,058.86 = 394,591.80/x
  3. Step 3: Cross multiply
    684,885.27x = 945,058.86 × 394,591.80
  4. Step 4: Simplify right side
    684,885.27x = 372,912,476,673.35
  5. Step 5: Solve for x
    x = 372,912,476,673.35/684,885.27
  6. Step 6: Final answer
    x = 544,488.97

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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.