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Finding the Fourth Proportional to 4,878.52, 6,732.44 and 2,640.44

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Solution

The fourth proportional to 4,878.52, 6,732.44 and 2,640.44 is: 3,643.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.52 : 6,732.44 = 2,640.44 : x
  2. Step 2: Convert to fraction form
    4,878.52/6,732.44 = 2,640.44/x
  3. Step 3: Cross multiply
    4,878.52x = 6,732.44 × 2,640.44
  4. Step 4: Simplify right side
    4,878.52x = 17,776,603.87
  5. Step 5: Solve for x
    x = 17,776,603.87/4,878.52
  6. Step 6: Final answer
    x = 3,643.85

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Why These Related Problems?

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