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Finding the Fourth Proportional to 33,138.72, 45,732.51 and 18,994.23

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Solution

The fourth proportional to 33,138.72, 45,732.51 and 18,994.23 is: 26,212.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,138.72 : 45,732.51 = 18,994.23 : x
  2. Step 2: Convert to fraction form
    33,138.72/45,732.51 = 18,994.23/x
  3. Step 3: Cross multiply
    33,138.72x = 45,732.51 × 18,994.23
  4. Step 4: Simplify right side
    33,138.72x = 868,653,813.42
  5. Step 5: Solve for x
    x = 868,653,813.42/33,138.72
  6. Step 6: Final answer
    x = 26,212.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.