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Finding the Fourth Proportional to 5,732.80, 8,599.20 and 5,408.80

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Solution

The fourth proportional to 5,732.80, 8,599.20 and 5,408.80 is: 8,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,732.80 : 8,599.20 = 5,408.80 : x
  2. Step 2: Convert to fraction form
    5,732.80/8,599.20 = 5,408.80/x
  3. Step 3: Cross multiply
    5,732.80x = 8,599.20 × 5,408.80
  4. Step 4: Simplify right side
    5,732.80x = 46,511,352.96
  5. Step 5: Solve for x
    x = 46,511,352.96/5,732.80
  6. Step 6: Final answer
    x = 8,113.20

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1.5x scale

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.