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Finding the Fourth Proportional to 101,949.44, 140,685.66 and 56,630.54

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Solution

The fourth proportional to 101,949.44, 140,685.66 and 56,630.54 is: 78,147.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,949.44 : 140,685.66 = 56,630.54 : x
  2. Step 2: Convert to fraction form
    101,949.44/140,685.66 = 56,630.54/x
  3. Step 3: Cross multiply
    101,949.44x = 140,685.66 × 56,630.54
  4. Step 4: Simplify right side
    101,949.44x = 7,967,105,247.77
  5. Step 5: Solve for x
    x = 7,967,105,247.77/101,949.44
  6. Step 6: Final answer
    x = 78,147.62

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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.