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Finding the Fourth Proportional to 68,728.68, 94,845 and 63,086.22

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Solution

The fourth proportional to 68,728.68, 94,845 and 63,086.22 is: 87,058.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,728.68 : 94,845 = 63,086.22 : x
  2. Step 2: Convert to fraction form
    68,728.68/94,845 = 63,086.22/x
  3. Step 3: Cross multiply
    68,728.68x = 94,845 × 63,086.22
  4. Step 4: Simplify right side
    68,728.68x = 5,983,412,535.90
  5. Step 5: Solve for x
    x = 5,983,412,535.90/68,728.68
  6. Step 6: Final answer
    x = 87,058.45

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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.