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Finding the Fourth Proportional to 57,361.52, 85,945.20 and 35,128.46

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Solution

The fourth proportional to 57,361.52, 85,945.20 and 35,128.46 is: 52,633.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361.52 : 85,945.20 = 35,128.46 : x
  2. Step 2: Convert to fraction form
    57,361.52/85,945.20 = 35,128.46/x
  3. Step 3: Cross multiply
    57,361.52x = 85,945.20 × 35,128.46
  4. Step 4: Simplify right side
    57,361.52x = 3,019,122,520.39
  5. Step 5: Solve for x
    x = 3,019,122,520.39/57,361.52
  6. Step 6: Final answer
    x = 52,633.24

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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.