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Finding the Fourth Proportional to 5,480.49, 8,216.47 and 3,720.86

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Solution

The fourth proportional to 5,480.49, 8,216.47 and 3,720.86 is: 5,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,480.49 : 8,216.47 = 3,720.86 : x
  2. Step 2: Convert to fraction form
    5,480.49/8,216.47 = 3,720.86/x
  3. Step 3: Cross multiply
    5,480.49x = 8,216.47 × 3,720.86
  4. Step 4: Simplify right side
    5,480.49x = 30,572,274.88
  5. Step 5: Solve for x
    x = 30,572,274.88/5,480.49
  6. Step 6: Final answer
    x = 5,578.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.