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Finding the Fourth Proportional to 78,949, 108,998.22 and 50,704.48

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Solution

The fourth proportional to 78,949, 108,998.22 and 50,704.48 is: 70,003.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,949 : 108,998.22 = 50,704.48 : x
  2. Step 2: Convert to fraction form
    78,949/108,998.22 = 50,704.48/x
  3. Step 3: Cross multiply
    78,949x = 108,998.22 × 50,704.48
  4. Step 4: Simplify right side
    78,949x = 5,526,698,066.03
  5. Step 5: Solve for x
    x = 5,526,698,066.03/78,949
  6. Step 6: Final answer
    x = 70,003.40

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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.