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Finding the Fourth Proportional to 5,672.18, 8,511.16 and 2,551.57

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Solution

The fourth proportional to 5,672.18, 8,511.16 and 2,551.57 is: 3,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.18 : 8,511.16 = 2,551.57 : x
  2. Step 2: Convert to fraction form
    5,672.18/8,511.16 = 2,551.57/x
  3. Step 3: Cross multiply
    5,672.18x = 8,511.16 × 2,551.57
  4. Step 4: Simplify right side
    5,672.18x = 21,716,777.97
  5. Step 5: Solve for x
    x = 21,716,777.97/5,672.18
  6. Step 6: Final answer
    x = 3,828.65

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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.