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Finding the Fourth Proportional to 15,617.10, 21,551.42 and 8,543.44

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Solution

The fourth proportional to 15,617.10, 21,551.42 and 8,543.44 is: 11,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.10 : 21,551.42 = 8,543.44 : x
  2. Step 2: Convert to fraction form
    15,617.10/21,551.42 = 8,543.44/x
  3. Step 3: Cross multiply
    15,617.10x = 21,551.42 × 8,543.44
  4. Step 4: Simplify right side
    15,617.10x = 184,123,263.68
  5. Step 5: Solve for x
    x = 184,123,263.68/15,617.10
  6. Step 6: Final answer
    x = 11,789.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.