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Finding the Fourth Proportional to 83,961, 115,855.62 and 56,796.36

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Solution

The fourth proportional to 83,961, 115,855.62 and 56,796.36 is: 78,371.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,961 : 115,855.62 = 56,796.36 : x
  2. Step 2: Convert to fraction form
    83,961/115,855.62 = 56,796.36/x
  3. Step 3: Cross multiply
    83,961x = 115,855.62 × 56,796.36
  4. Step 4: Simplify right side
    83,961x = 6,580,177,501.54
  5. Step 5: Solve for x
    x = 6,580,177,501.54/83,961
  6. Step 6: Final answer
    x = 78,371.83

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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.