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Finding the Fourth Proportional to 33,393.78, 50,116.05 and 12,353.72

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Solution

The fourth proportional to 33,393.78, 50,116.05 and 12,353.72 is: 18,539.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,393.78 : 50,116.05 = 12,353.72 : x
  2. Step 2: Convert to fraction form
    33,393.78/50,116.05 = 12,353.72/x
  3. Step 3: Cross multiply
    33,393.78x = 50,116.05 × 12,353.72
  4. Step 4: Simplify right side
    33,393.78x = 619,119,398.63
  5. Step 5: Solve for x
    x = 619,119,398.63/33,393.78
  6. Step 6: Final answer
    x = 18,539.96

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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.