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Finding the Fourth Proportional to 92,105.21, 126,798.13 and 87,873.37

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Solution

The fourth proportional to 92,105.21, 126,798.13 and 87,873.37 is: 120,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,105.21 : 126,798.13 = 87,873.37 : x
  2. Step 2: Convert to fraction form
    92,105.21/126,798.13 = 87,873.37/x
  3. Step 3: Cross multiply
    92,105.21x = 126,798.13 × 87,873.37
  4. Step 4: Simplify right side
    92,105.21x = 11,142,178,992.80
  5. Step 5: Solve for x
    x = 11,142,178,992.80/92,105.21
  6. Step 6: Final answer
    x = 120,972.30

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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.