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Finding the Fourth Proportional to 104,616.76, 156,999.24 and 45,469.72

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Solution

The fourth proportional to 104,616.76, 156,999.24 and 45,469.72 is: 68,236.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,616.76 : 156,999.24 = 45,469.72 : x
  2. Step 2: Convert to fraction form
    104,616.76/156,999.24 = 45,469.72/x
  3. Step 3: Cross multiply
    104,616.76x = 156,999.24 × 45,469.72
  4. Step 4: Simplify right side
    104,616.76x = 7,138,711,483.01
  5. Step 5: Solve for x
    x = 7,138,711,483.01/104,616.76
  6. Step 6: Final answer
    x = 68,236.79

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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.