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Finding the Fourth Proportional to 120,630.69, 180,958.46 and 41,744.79

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Solution

The fourth proportional to 120,630.69, 180,958.46 and 41,744.79 is: 62,621.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,630.69 : 180,958.46 = 41,744.79 : x
  2. Step 2: Convert to fraction form
    120,630.69/180,958.46 = 41,744.79/x
  3. Step 3: Cross multiply
    120,630.69x = 180,958.46 × 41,744.79
  4. Step 4: Simplify right side
    120,630.69x = 7,554,072,702.70
  5. Step 5: Solve for x
    x = 7,554,072,702.70/120,630.69
  6. Step 6: Final answer
    x = 62,621.48

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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.