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Finding the Fourth Proportional to 203,958.12, 305,905.56 and 104,192.04

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Solution

The fourth proportional to 203,958.12, 305,905.56 and 104,192.04 is: 156,271.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,958.12 : 305,905.56 = 104,192.04 : x
  2. Step 2: Convert to fraction form
    203,958.12/305,905.56 = 104,192.04/x
  3. Step 3: Cross multiply
    203,958.12x = 305,905.56 × 104,192.04
  4. Step 4: Simplify right side
    203,958.12x = 31,872,924,343.74
  5. Step 5: Solve for x
    x = 31,872,924,343.74/203,958.12
  6. Step 6: Final answer
    x = 156,271.91

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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.