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Finding the Fourth Proportional to 72,938.44, 100,656.26 and 41,107.88

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Solution

The fourth proportional to 72,938.44, 100,656.26 and 41,107.88 is: 56,729.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,938.44 : 100,656.26 = 41,107.88 : x
  2. Step 2: Convert to fraction form
    72,938.44/100,656.26 = 41,107.88/x
  3. Step 3: Cross multiply
    72,938.44x = 100,656.26 × 41,107.88
  4. Step 4: Simplify right side
    72,938.44x = 4,137,765,457.33
  5. Step 5: Solve for x
    x = 4,137,765,457.33/72,938.44
  6. Step 6: Final answer
    x = 56,729.56

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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.