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Finding the Fourth Proportional to 4,551.60, 6,832.80 and 2,578.80

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Solution

The fourth proportional to 4,551.60, 6,832.80 and 2,578.80 is: 3,871.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,551.60 : 6,832.80 = 2,578.80 : x
  2. Step 2: Convert to fraction form
    4,551.60/6,832.80 = 2,578.80/x
  3. Step 3: Cross multiply
    4,551.60x = 6,832.80 × 2,578.80
  4. Step 4: Simplify right side
    4,551.60x = 17,620,424.64
  5. Step 5: Solve for x
    x = 17,620,424.64/4,551.60
  6. Step 6: Final answer
    x = 3,871.26

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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.