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Finding the Fourth Proportional to 33,640.80, 50,420.70 and 19,573.80

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Solution

The fourth proportional to 33,640.80, 50,420.70 and 19,573.80 is: 29,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,640.80 : 50,420.70 = 19,573.80 : x
  2. Step 2: Convert to fraction form
    33,640.80/50,420.70 = 19,573.80/x
  3. Step 3: Cross multiply
    33,640.80x = 50,420.70 × 19,573.80
  4. Step 4: Simplify right side
    33,640.80x = 986,924,697.66
  5. Step 5: Solve for x
    x = 986,924,697.66/33,640.80
  6. Step 6: Final answer
    x = 29,337.14

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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.