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Finding the Fourth Proportional to 19,057.44, 28,586.16 and 8,672.16

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Solution

The fourth proportional to 19,057.44, 28,586.16 and 8,672.16 is: 13,008.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,057.44 : 28,586.16 = 8,672.16 : x
  2. Step 2: Convert to fraction form
    19,057.44/28,586.16 = 8,672.16/x
  3. Step 3: Cross multiply
    19,057.44x = 28,586.16 × 8,672.16
  4. Step 4: Simplify right side
    19,057.44x = 247,903,753.31
  5. Step 5: Solve for x
    x = 247,903,753.31/19,057.44
  6. Step 6: Final answer
    x = 13,008.24

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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.