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Finding the Fourth Proportional to 33,688.66, 50,524.34 and 9,990.64

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Solution

The fourth proportional to 33,688.66, 50,524.34 and 9,990.64 is: 14,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,688.66 : 50,524.34 = 9,990.64 : x
  2. Step 2: Convert to fraction form
    33,688.66/50,524.34 = 9,990.64/x
  3. Step 3: Cross multiply
    33,688.66x = 50,524.34 × 9,990.64
  4. Step 4: Simplify right side
    33,688.66x = 504,770,492.18
  5. Step 5: Solve for x
    x = 504,770,492.18/33,688.66
  6. Step 6: Final answer
    x = 14,983.39

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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.