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Finding the Fourth Proportional to 18,727.66, 28,072.86 and 10,411.39

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Solution

The fourth proportional to 18,727.66, 28,072.86 and 10,411.39 is: 15,606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.66 : 28,072.86 = 10,411.39 : x
  2. Step 2: Convert to fraction form
    18,727.66/28,072.86 = 10,411.39/x
  3. Step 3: Cross multiply
    18,727.66x = 28,072.86 × 10,411.39
  4. Step 4: Simplify right side
    18,727.66x = 292,277,493.88
  5. Step 5: Solve for x
    x = 292,277,493.88/18,727.66
  6. Step 6: Final answer
    x = 15,606.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.