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Finding the Fourth Proportional to 103,793.10, 155,361.60 and 74,268.60

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Solution

The fourth proportional to 103,793.10, 155,361.60 and 74,268.60 is: 111,168.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,793.10 : 155,361.60 = 74,268.60 : x
  2. Step 2: Convert to fraction form
    103,793.10/155,361.60 = 74,268.60/x
  3. Step 3: Cross multiply
    103,793.10x = 155,361.60 × 74,268.60
  4. Step 4: Simplify right side
    103,793.10x = 11,538,488,525.76
  5. Step 5: Solve for x
    x = 11,538,488,525.76/103,793.10
  6. Step 6: Final answer
    x = 111,168.17

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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.