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Finding the Fourth Proportional to 91,858.50, 126,774.45 and 58,324.50

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Solution

The fourth proportional to 91,858.50, 126,774.45 and 58,324.50 is: 80,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,858.50 : 126,774.45 = 58,324.50 : x
  2. Step 2: Convert to fraction form
    91,858.50/126,774.45 = 58,324.50/x
  3. Step 3: Cross multiply
    91,858.50x = 126,774.45 × 58,324.50
  4. Step 4: Simplify right side
    91,858.50x = 7,394,056,409.03
  5. Step 5: Solve for x
    x = 7,394,056,409.03/91,858.50
  6. Step 6: Final answer
    x = 80,493.98

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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.