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Finding the Fourth Proportional to 394,114.72, 591,255.12 and 127,854.46

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Solution

The fourth proportional to 394,114.72, 591,255.12 and 127,854.46 is: 191,808.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,114.72 : 591,255.12 = 127,854.46 : x
  2. Step 2: Convert to fraction form
    394,114.72/591,255.12 = 127,854.46/x
  3. Step 3: Cross multiply
    394,114.72x = 591,255.12 × 127,854.46
  4. Step 4: Simplify right side
    394,114.72x = 75,594,604,089.84
  5. Step 5: Solve for x
    x = 75,594,604,089.84/394,114.72
  6. Step 6: Final answer
    x = 191,808.63

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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.