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Finding the Fourth Proportional to 193,361.22, 266,778.67 and 112,731.69

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Solution

The fourth proportional to 193,361.22, 266,778.67 and 112,731.69 is: 155,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,361.22 : 266,778.67 = 112,731.69 : x
  2. Step 2: Convert to fraction form
    193,361.22/266,778.67 = 112,731.69/x
  3. Step 3: Cross multiply
    193,361.22x = 266,778.67 × 112,731.69
  4. Step 4: Simplify right side
    193,361.22x = 30,074,410,325.05
  5. Step 5: Solve for x
    x = 30,074,410,325.05/193,361.22
  6. Step 6: Final answer
    x = 155,534.86

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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.