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Finding the Fourth Proportional to 72,605.44, 108,920.85 and 33,166.54

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Solution

The fourth proportional to 72,605.44, 108,920.85 and 33,166.54 is: 49,755.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,605.44 : 108,920.85 = 33,166.54 : x
  2. Step 2: Convert to fraction form
    72,605.44/108,920.85 = 33,166.54/x
  3. Step 3: Cross multiply
    72,605.44x = 108,920.85 × 33,166.54
  4. Step 4: Simplify right side
    72,605.44x = 3,612,527,728.36
  5. Step 5: Solve for x
    x = 3,612,527,728.36/72,605.44
  6. Step 6: Final answer
    x = 49,755.61

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1.5x scale

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.