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Finding the Fourth Proportional to 37,231.72, 51,379.94 and 20,465.80

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Solution

The fourth proportional to 37,231.72, 51,379.94 and 20,465.80 is: 28,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,231.72 : 51,379.94 = 20,465.80 : x
  2. Step 2: Convert to fraction form
    37,231.72/51,379.94 = 20,465.80/x
  3. Step 3: Cross multiply
    37,231.72x = 51,379.94 × 20,465.80
  4. Step 4: Simplify right side
    37,231.72x = 1,051,531,576.05
  5. Step 5: Solve for x
    x = 1,051,531,576.05/37,231.72
  6. Step 6: Final answer
    x = 28,242.90

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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.