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Finding the Fourth Proportional to 12,520.95, 18,783.42 and 5,943.54

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Solution

The fourth proportional to 12,520.95, 18,783.42 and 5,943.54 is: 8,916.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.95 : 18,783.42 = 5,943.54 : x
  2. Step 2: Convert to fraction form
    12,520.95/18,783.42 = 5,943.54/x
  3. Step 3: Cross multiply
    12,520.95x = 18,783.42 × 5,943.54
  4. Step 4: Simplify right side
    12,520.95x = 111,640,008.11
  5. Step 5: Solve for x
    x = 111,640,008.11/12,520.95
  6. Step 6: Final answer
    x = 8,916.26

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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.