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Finding the Fourth Proportional to 72,865.09, 100,558.11 and 44,576.20

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Solution

The fourth proportional to 72,865.09, 100,558.11 and 44,576.20 is: 61,517.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,865.09 : 100,558.11 = 44,576.20 : x
  2. Step 2: Convert to fraction form
    72,865.09/100,558.11 = 44,576.20/x
  3. Step 3: Cross multiply
    72,865.09x = 100,558.11 × 44,576.20
  4. Step 4: Simplify right side
    72,865.09x = 4,482,498,422.98
  5. Step 5: Solve for x
    x = 4,482,498,422.98/72,865.09
  6. Step 6: Final answer
    x = 61,517.78

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1.5x scale

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.