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Finding the Fourth Proportional to 133,936.80, 200,905.20 and 104,376.75

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Solution

The fourth proportional to 133,936.80, 200,905.20 and 104,376.75 is: 156,565.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,936.80 : 200,905.20 = 104,376.75 : x
  2. Step 2: Convert to fraction form
    133,936.80/200,905.20 = 104,376.75/x
  3. Step 3: Cross multiply
    133,936.80x = 200,905.20 × 104,376.75
  4. Step 4: Simplify right side
    133,936.80x = 20,969,831,834.10
  5. Step 5: Solve for x
    x = 20,969,831,834.10/133,936.80
  6. Step 6: Final answer
    x = 156,565.13

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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.