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Finding the Fourth Proportional to 394,058.40, 591,170.60 and 127,798.14

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Solution

The fourth proportional to 394,058.40, 591,170.60 and 127,798.14 is: 191,724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,058.40 : 591,170.60 = 127,798.14 : x
  2. Step 2: Convert to fraction form
    394,058.40/591,170.60 = 127,798.14/x
  3. Step 3: Cross multiply
    394,058.40x = 591,170.60 × 127,798.14
  4. Step 4: Simplify right side
    394,058.40x = 75,550,503,102.68
  5. Step 5: Solve for x
    x = 75,550,503,102.68/394,058.40
  6. Step 6: Final answer
    x = 191,724.13

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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.