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Finding the Fourth Proportional to 57,431.53, 79,243.90 and 33,553.59

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Solution

The fourth proportional to 57,431.53, 79,243.90 and 33,553.59 is: 46,297.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,431.53 : 79,243.90 = 33,553.59 : x
  2. Step 2: Convert to fraction form
    57,431.53/79,243.90 = 33,553.59/x
  3. Step 3: Cross multiply
    57,431.53x = 79,243.90 × 33,553.59
  4. Step 4: Simplify right side
    57,431.53x = 2,658,917,162.83
  5. Step 5: Solve for x
    x = 2,658,917,162.83/57,431.53
  6. Step 6: Final answer
    x = 46,297.17

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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.