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Finding the Fourth Proportional to 73,015.96, 100,754.46 and 53,905.90

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Solution

The fourth proportional to 73,015.96, 100,754.46 and 53,905.90 is: 74,384.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,015.96 : 100,754.46 = 53,905.90 : x
  2. Step 2: Convert to fraction form
    73,015.96/100,754.46 = 53,905.90/x
  3. Step 3: Cross multiply
    73,015.96x = 100,754.46 × 53,905.90
  4. Step 4: Simplify right side
    73,015.96x = 5,431,259,845.31
  5. Step 5: Solve for x
    x = 5,431,259,845.31/73,015.96
  6. Step 6: Final answer
    x = 74,384.56

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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.