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Finding the Fourth Proportional to 66,793.86, 92,190.69 and 41,638.50

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Solution

The fourth proportional to 66,793.86, 92,190.69 and 41,638.50 is: 57,470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,793.86 : 92,190.69 = 41,638.50 : x
  2. Step 2: Convert to fraction form
    66,793.86/92,190.69 = 41,638.50/x
  3. Step 3: Cross multiply
    66,793.86x = 92,190.69 × 41,638.50
  4. Step 4: Simplify right side
    66,793.86x = 3,838,682,045.57
  5. Step 5: Solve for x
    x = 3,838,682,045.57/66,793.86
  6. Step 6: Final answer
    x = 57,470.58

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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.