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Finding the Fourth Proportional to 133,361.74, 184,032.41 and 72,920.66

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Solution

The fourth proportional to 133,361.74, 184,032.41 and 72,920.66 is: 100,626.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,361.74 : 184,032.41 = 72,920.66 : x
  2. Step 2: Convert to fraction form
    133,361.74/184,032.41 = 72,920.66/x
  3. Step 3: Cross multiply
    133,361.74x = 184,032.41 × 72,920.66
  4. Step 4: Simplify right side
    133,361.74x = 13,419,763,513.83
  5. Step 5: Solve for x
    x = 13,419,763,513.83/133,361.74
  6. Step 6: Final answer
    x = 100,626.79

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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.