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Finding the Fourth Proportional to 13,916.10, 20,879.44 and 8,373.27

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Solution

The fourth proportional to 13,916.10, 20,879.44 and 8,373.27 is: 12,563.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.10 : 20,879.44 = 8,373.27 : x
  2. Step 2: Convert to fraction form
    13,916.10/20,879.44 = 8,373.27/x
  3. Step 3: Cross multiply
    13,916.10x = 20,879.44 × 8,373.27
  4. Step 4: Simplify right side
    13,916.10x = 174,829,167.64
  5. Step 5: Solve for x
    x = 174,829,167.64/13,916.10
  6. Step 6: Final answer
    x = 12,563.09

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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.