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Finding the Fourth Proportional to 11,355.25, 17,025.49 and 5,428.93

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Solution

The fourth proportional to 11,355.25, 17,025.49 and 5,428.93 is: 8,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.25 : 17,025.49 = 5,428.93 : x
  2. Step 2: Convert to fraction form
    11,355.25/17,025.49 = 5,428.93/x
  3. Step 3: Cross multiply
    11,355.25x = 17,025.49 × 5,428.93
  4. Step 4: Simplify right side
    11,355.25x = 92,430,193.43
  5. Step 5: Solve for x
    x = 92,430,193.43/11,355.25
  6. Step 6: Final answer
    x = 8,139.86

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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.