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Finding the Fourth Proportional to 394,081.90, 590,977.05 and 127,851.10

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Solution

The fourth proportional to 394,081.90, 590,977.05 and 127,851.10 is: 191,729.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,081.90 : 590,977.05 = 127,851.10 : x
  2. Step 2: Convert to fraction form
    394,081.90/590,977.05 = 127,851.10/x
  3. Step 3: Cross multiply
    394,081.90x = 590,977.05 × 127,851.10
  4. Step 4: Simplify right side
    394,081.90x = 75,557,065,917.26
  5. Step 5: Solve for x
    x = 75,557,065,917.26/394,081.90
  6. Step 6: Final answer
    x = 191,729.35

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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.