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Finding the Fourth Proportional to 79,116.88, 118,685.64 and 29,231.92

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Solution

The fourth proportional to 79,116.88, 118,685.64 and 29,231.92 is: 43,851.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,116.88 : 118,685.64 = 29,231.92 : x
  2. Step 2: Convert to fraction form
    79,116.88/118,685.64 = 29,231.92/x
  3. Step 3: Cross multiply
    79,116.88x = 118,685.64 × 29,231.92
  4. Step 4: Simplify right side
    79,116.88x = 3,469,409,133.63
  5. Step 5: Solve for x
    x = 3,469,409,133.63/79,116.88
  6. Step 6: Final answer
    x = 43,851.69

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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.