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Finding the Fourth Proportional to 32,912.80, 49,380.72 and 9,540.64

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Solution

The fourth proportional to 32,912.80, 49,380.72 and 9,540.64 is: 14,314.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,912.80 : 49,380.72 = 9,540.64 : x
  2. Step 2: Convert to fraction form
    32,912.80/49,380.72 = 9,540.64/x
  3. Step 3: Cross multiply
    32,912.80x = 49,380.72 × 9,540.64
  4. Step 4: Simplify right side
    32,912.80x = 471,123,672.46
  5. Step 5: Solve for x
    x = 471,123,672.46/32,912.80
  6. Step 6: Final answer
    x = 14,314.30

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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.