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Finding the Fourth Proportional to 18,446.51, 27,665.71 and 5,295.96

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Solution

The fourth proportional to 18,446.51, 27,665.71 and 5,295.96 is: 7,942.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,446.51 : 27,665.71 = 5,295.96 : x
  2. Step 2: Convert to fraction form
    18,446.51/27,665.71 = 5,295.96/x
  3. Step 3: Cross multiply
    18,446.51x = 27,665.71 × 5,295.96
  4. Step 4: Simplify right side
    18,446.51x = 146,516,493.53
  5. Step 5: Solve for x
    x = 146,516,493.53/18,446.51
  6. Step 6: Final answer
    x = 7,942.78

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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.