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Finding the Fourth Proportional to 140,361.94, 193,704.26 and 76,703.84

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Solution

The fourth proportional to 140,361.94, 193,704.26 and 76,703.84 is: 105,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,361.94 : 193,704.26 = 76,703.84 : x
  2. Step 2: Convert to fraction form
    140,361.94/193,704.26 = 76,703.84/x
  3. Step 3: Cross multiply
    140,361.94x = 193,704.26 × 76,703.84
  4. Step 4: Simplify right side
    140,361.94x = 14,857,860,566.36
  5. Step 5: Solve for x
    x = 14,857,860,566.36/140,361.94
  6. Step 6: Final answer
    x = 105,853.91

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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.