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Finding the Fourth Proportional to 91,992.92, 126,951.46 and 55,693.96

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Solution

The fourth proportional to 91,992.92, 126,951.46 and 55,693.96 is: 76,858.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,992.92 : 126,951.46 = 55,693.96 : x
  2. Step 2: Convert to fraction form
    91,992.92/126,951.46 = 55,693.96/x
  3. Step 3: Cross multiply
    91,992.92x = 126,951.46 × 55,693.96
  4. Step 4: Simplify right side
    91,992.92x = 7,070,429,535.18
  5. Step 5: Solve for x
    x = 7,070,429,535.18/91,992.92
  6. Step 6: Final answer
    x = 76,858.41

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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.