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Finding the Fourth Proportional to 22,906.65, 34,516.03 and 18,837.81

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Solution

The fourth proportional to 22,906.65, 34,516.03 and 18,837.81 is: 28,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,906.65 : 34,516.03 = 18,837.81 : x
  2. Step 2: Convert to fraction form
    22,906.65/34,516.03 = 18,837.81/x
  3. Step 3: Cross multiply
    22,906.65x = 34,516.03 × 18,837.81
  4. Step 4: Simplify right side
    22,906.65x = 650,206,415.09
  5. Step 5: Solve for x
    x = 650,206,415.09/22,906.65
  6. Step 6: Final answer
    x = 28,385.05

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.