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Finding the Fourth Proportional to 39,879.74, 55,009.70 and 23,736.21

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Solution

The fourth proportional to 39,879.74, 55,009.70 and 23,736.21 is: 32,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,879.74 : 55,009.70 = 23,736.21 : x
  2. Step 2: Convert to fraction form
    39,879.74/55,009.70 = 23,736.21/x
  3. Step 3: Cross multiply
    39,879.74x = 55,009.70 × 23,736.21
  4. Step 4: Simplify right side
    39,879.74x = 1,305,721,555.28
  5. Step 5: Solve for x
    x = 1,305,721,555.28/39,879.74
  6. Step 6: Final answer
    x = 32,741.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.