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Finding the Fourth Proportional to 139,953.92, 193,027.18 and 96,949.64

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Solution

The fourth proportional to 139,953.92, 193,027.18 and 96,949.64 is: 133,714.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,953.92 : 193,027.18 = 96,949.64 : x
  2. Step 2: Convert to fraction form
    139,953.92/193,027.18 = 96,949.64/x
  3. Step 3: Cross multiply
    139,953.92x = 193,027.18 × 96,949.64
  4. Step 4: Simplify right side
    139,953.92x = 18,713,915,611.22
  5. Step 5: Solve for x
    x = 18,713,915,611.22/139,953.92
  6. Step 6: Final answer
    x = 133,714.84

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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.