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Finding the Fourth Proportional to 199,786.80, 299,679.38 and 94,679.58

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Solution

The fourth proportional to 199,786.80, 299,679.38 and 94,679.58 is: 142,018.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,786.80 : 299,679.38 = 94,679.58 : x
  2. Step 2: Convert to fraction form
    199,786.80/299,679.38 = 94,679.58/x
  3. Step 3: Cross multiply
    199,786.80x = 299,679.38 × 94,679.58
  4. Step 4: Simplify right side
    199,786.80x = 28,373,517,833.06
  5. Step 5: Solve for x
    x = 28,373,517,833.06/199,786.80
  6. Step 6: Final answer
    x = 142,018.98

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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.