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Finding the Fourth Proportional to 104,638.56, 156,935.64 and 34,501.20

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Solution

The fourth proportional to 104,638.56, 156,935.64 and 34,501.20 is: 51,744.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,638.56 : 156,935.64 = 34,501.20 : x
  2. Step 2: Convert to fraction form
    104,638.56/156,935.64 = 34,501.20/x
  3. Step 3: Cross multiply
    104,638.56x = 156,935.64 × 34,501.20
  4. Step 4: Simplify right side
    104,638.56x = 5,414,467,902.77
  5. Step 5: Solve for x
    x = 5,414,467,902.77/104,638.56
  6. Step 6: Final answer
    x = 51,744.48

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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.