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Finding the Fourth Proportional to 394,782.58, 592,112.01 and 128,541.30

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Solution

The fourth proportional to 394,782.58, 592,112.01 and 128,541.30 is: 192,791.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,782.58 : 592,112.01 = 128,541.30 : x
  2. Step 2: Convert to fraction form
    394,782.58/592,112.01 = 128,541.30/x
  3. Step 3: Cross multiply
    394,782.58x = 592,112.01 × 128,541.30
  4. Step 4: Simplify right side
    394,782.58x = 76,110,847,511.01
  5. Step 5: Solve for x
    x = 76,110,847,511.01/394,782.58
  6. Step 6: Final answer
    x = 192,791.81

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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.