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Finding the Fourth Proportional to 104,908.54, 144,773.81 and 57,161.90

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Solution

The fourth proportional to 104,908.54, 144,773.81 and 57,161.90 is: 78,883.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,908.54 : 144,773.81 = 57,161.90 : x
  2. Step 2: Convert to fraction form
    104,908.54/144,773.81 = 57,161.90/x
  3. Step 3: Cross multiply
    104,908.54x = 144,773.81 × 57,161.90
  4. Step 4: Simplify right side
    104,908.54x = 8,275,545,040.16
  5. Step 5: Solve for x
    x = 8,275,545,040.16/104,908.54
  6. Step 6: Final answer
    x = 78,883.42

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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.