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Finding the Fourth Proportional to 394,605.69, 591,929.67 and 124,713.30

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Solution

The fourth proportional to 394,605.69, 591,929.67 and 124,713.30 is: 187,076.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,605.69 : 591,929.67 = 124,713.30 : x
  2. Step 2: Convert to fraction form
    394,605.69/591,929.67 = 124,713.30/x
  3. Step 3: Cross multiply
    394,605.69x = 591,929.67 × 124,713.30
  4. Step 4: Simplify right side
    394,605.69x = 73,821,501,461.92
  5. Step 5: Solve for x
    x = 73,821,501,461.92/394,605.69
  6. Step 6: Final answer
    x = 187,076.63

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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.