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Finding the Fourth Proportional to 203,305.48, 280,557.30 and 112,660.60

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Solution

The fourth proportional to 203,305.48, 280,557.30 and 112,660.60 is: 155,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,305.48 : 280,557.30 = 112,660.60 : x
  2. Step 2: Convert to fraction form
    203,305.48/280,557.30 = 112,660.60/x
  3. Step 3: Cross multiply
    203,305.48x = 280,557.30 × 112,660.60
  4. Step 4: Simplify right side
    203,305.48x = 31,607,753,752.38
  5. Step 5: Solve for x
    x = 31,607,753,752.38/203,305.48
  6. Step 6: Final answer
    x = 155,469.27

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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.