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Finding the Fourth Proportional to 432,571.70, 648,906.15 and 133,049.90

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Solution

The fourth proportional to 432,571.70, 648,906.15 and 133,049.90 is: 199,589.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,571.70 : 648,906.15 = 133,049.90 : x
  2. Step 2: Convert to fraction form
    432,571.70/648,906.15 = 133,049.90/x
  3. Step 3: Cross multiply
    432,571.70x = 648,906.15 × 133,049.90
  4. Step 4: Simplify right side
    432,571.70x = 86,336,898,366.89
  5. Step 5: Solve for x
    x = 86,336,898,366.89/432,571.70
  6. Step 6: Final answer
    x = 199,589.80

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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.