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Finding the Fourth Proportional to 5,361.60, 7,390.26 and 3,867.44

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Solution

The fourth proportional to 5,361.60, 7,390.26 and 3,867.44 is: 5,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,361.60 : 7,390.26 = 3,867.44 : x
  2. Step 2: Convert to fraction form
    5,361.60/7,390.26 = 3,867.44/x
  3. Step 3: Cross multiply
    5,361.60x = 7,390.26 × 3,867.44
  4. Step 4: Simplify right side
    5,361.60x = 28,581,387.13
  5. Step 5: Solve for x
    x = 28,581,387.13/5,361.60
  6. Step 6: Final answer
    x = 5,330.76

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1.5x scale

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.