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Finding the Fourth Proportional to 104,638.36, 156,954.06 and 45,474.09

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Solution

The fourth proportional to 104,638.36, 156,954.06 and 45,474.09 is: 68,209.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,638.36 : 156,954.06 = 45,474.09 : x
  2. Step 2: Convert to fraction form
    104,638.36/156,954.06 = 45,474.09/x
  3. Step 3: Cross multiply
    104,638.36x = 156,954.06 × 45,474.09
  4. Step 4: Simplify right side
    104,638.36x = 7,137,342,265.54
  5. Step 5: Solve for x
    x = 7,137,342,265.54/104,638.36
  6. Step 6: Final answer
    x = 68,209.62

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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.