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Finding the Fourth Proportional to 18,666.44, 27,975.90 and 9,905.48

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Solution

The fourth proportional to 18,666.44, 27,975.90 and 9,905.48 is: 14,845.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,666.44 : 27,975.90 = 9,905.48 : x
  2. Step 2: Convert to fraction form
    18,666.44/27,975.90 = 9,905.48/x
  3. Step 3: Cross multiply
    18,666.44x = 27,975.90 × 9,905.48
  4. Step 4: Simplify right side
    18,666.44x = 277,114,717.93
  5. Step 5: Solve for x
    x = 277,114,717.93/18,666.44
  6. Step 6: Final answer
    x = 14,845.61

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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.