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Finding the Fourth Proportional to 9,181.95, 12,672.17 and 5,455.95

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Solution

The fourth proportional to 9,181.95, 12,672.17 and 5,455.95 is: 7,529.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,181.95 : 12,672.17 = 5,455.95 : x
  2. Step 2: Convert to fraction form
    9,181.95/12,672.17 = 5,455.95/x
  3. Step 3: Cross multiply
    9,181.95x = 12,672.17 × 5,455.95
  4. Step 4: Simplify right side
    9,181.95x = 69,138,725.91
  5. Step 5: Solve for x
    x = 69,138,725.91/9,181.95
  6. Step 6: Final answer
    x = 7,529.85

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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.