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Finding the Fourth Proportional to 81,632, 122,491.56 and 34,874.12

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Solution

The fourth proportional to 81,632, 122,491.56 and 34,874.12 is: 52,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,632 : 122,491.56 = 34,874.12 : x
  2. Step 2: Convert to fraction form
    81,632/122,491.56 = 34,874.12/x
  3. Step 3: Cross multiply
    81,632x = 122,491.56 × 34,874.12
  4. Step 4: Simplify right side
    81,632x = 4,271,785,362.43
  5. Step 5: Solve for x
    x = 4,271,785,362.43/81,632
  6. Step 6: Final answer
    x = 52,329.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.