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Finding the Fourth Proportional to 101,268.90, 139,759.56 and 58,824.90

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Solution

The fourth proportional to 101,268.90, 139,759.56 and 58,824.90 is: 81,183.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,268.90 : 139,759.56 = 58,824.90 : x
  2. Step 2: Convert to fraction form
    101,268.90/139,759.56 = 58,824.90/x
  3. Step 3: Cross multiply
    101,268.90x = 139,759.56 × 58,824.90
  4. Step 4: Simplify right side
    101,268.90x = 8,221,342,141.04
  5. Step 5: Solve for x
    x = 8,221,342,141.04/101,268.90
  6. Step 6: Final answer
    x = 81,183.29

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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.