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Finding the Fourth Proportional to 136,247.34, 204,311.44 and 68,737.84

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Solution

The fourth proportional to 136,247.34, 204,311.44 and 68,737.84 is: 103,076.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,247.34 : 204,311.44 = 68,737.84 : x
  2. Step 2: Convert to fraction form
    136,247.34/204,311.44 = 68,737.84/x
  3. Step 3: Cross multiply
    136,247.34x = 204,311.44 × 68,737.84
  4. Step 4: Simplify right side
    136,247.34x = 14,043,927,239.98
  5. Step 5: Solve for x
    x = 14,043,927,239.98/136,247.34
  6. Step 6: Final answer
    x = 103,076.71

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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.