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Finding the Fourth Proportional to 16,953.28, 25,438.96 and 12,764.50

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Solution

The fourth proportional to 16,953.28, 25,438.96 and 12,764.50 is: 19,153.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,953.28 : 25,438.96 = 12,764.50 : x
  2. Step 2: Convert to fraction form
    16,953.28/25,438.96 = 12,764.50/x
  3. Step 3: Cross multiply
    16,953.28x = 25,438.96 × 12,764.50
  4. Step 4: Simplify right side
    16,953.28x = 324,715,604.92
  5. Step 5: Solve for x
    x = 324,715,604.92/16,953.28
  6. Step 6: Final answer
    x = 19,153.56

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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.