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Finding the Fourth Proportional to 61,672.26, 85,108.34 and 33,378.54

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Solution

The fourth proportional to 61,672.26, 85,108.34 and 33,378.54 is: 46,062.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,672.26 : 85,108.34 = 33,378.54 : x
  2. Step 2: Convert to fraction form
    61,672.26/85,108.34 = 33,378.54/x
  3. Step 3: Cross multiply
    61,672.26x = 85,108.34 × 33,378.54
  4. Step 4: Simplify right side
    61,672.26x = 2,840,792,131.02
  5. Step 5: Solve for x
    x = 2,840,792,131.02/61,672.26
  6. Step 6: Final answer
    x = 46,062.72

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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.