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Finding the Fourth Proportional to 53,382.56, 79,905.92 and 36,644.64

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Solution

The fourth proportional to 53,382.56, 79,905.92 and 36,644.64 is: 54,851.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,382.56 : 79,905.92 = 36,644.64 : x
  2. Step 2: Convert to fraction form
    53,382.56/79,905.92 = 36,644.64/x
  3. Step 3: Cross multiply
    53,382.56x = 79,905.92 × 36,644.64
  4. Step 4: Simplify right side
    53,382.56x = 2,928,123,672.27
  5. Step 5: Solve for x
    x = 2,928,123,672.27/53,382.56
  6. Step 6: Final answer
    x = 54,851.69

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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.