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Finding the Fourth Proportional to 72,682.26, 100,306.80 and 44,393.28

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Solution

The fourth proportional to 72,682.26, 100,306.80 and 44,393.28 is: 61,265.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,682.26 : 100,306.80 = 44,393.28 : x
  2. Step 2: Convert to fraction form
    72,682.26/100,306.80 = 44,393.28/x
  3. Step 3: Cross multiply
    72,682.26x = 100,306.80 × 44,393.28
  4. Step 4: Simplify right side
    72,682.26x = 4,452,947,858.30
  5. Step 5: Solve for x
    x = 4,452,947,858.30/72,682.26
  6. Step 6: Final answer
    x = 61,265.95

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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.