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Finding the Fourth Proportional to 7,361.10, 11,037.60 and 3,200.40

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Solution

The fourth proportional to 7,361.10, 11,037.60 and 3,200.40 is: 4,798.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,361.10 : 11,037.60 = 3,200.40 : x
  2. Step 2: Convert to fraction form
    7,361.10/11,037.60 = 3,200.40/x
  3. Step 3: Cross multiply
    7,361.10x = 11,037.60 × 3,200.40
  4. Step 4: Simplify right side
    7,361.10x = 35,324,735.04
  5. Step 5: Solve for x
    x = 35,324,735.04/7,361.10
  6. Step 6: Final answer
    x = 4,798.84

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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.