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Finding the Fourth Proportional to 394,089.71, 591,217.61 and 127,829.46

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Solution

The fourth proportional to 394,089.71, 591,217.61 and 127,829.46 is: 191,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,089.71 : 591,217.61 = 127,829.46 : x
  2. Step 2: Convert to fraction form
    394,089.71/591,217.61 = 127,829.46/x
  3. Step 3: Cross multiply
    394,089.71x = 591,217.61 × 127,829.46
  4. Step 4: Simplify right side
    394,089.71x = 75,575,027,189.64
  5. Step 5: Solve for x
    x = 75,575,027,189.64/394,089.71
  6. Step 6: Final answer
    x = 191,771.13

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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.