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Finding the Fourth Proportional to 81,568.88, 122,359.80 and 34,822.16

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Solution

The fourth proportional to 81,568.88, 122,359.80 and 34,822.16 is: 52,236.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,568.88 : 122,359.80 = 34,822.16 : x
  2. Step 2: Convert to fraction form
    81,568.88/122,359.80 = 34,822.16/x
  3. Step 3: Cross multiply
    81,568.88x = 122,359.80 × 34,822.16
  4. Step 4: Simplify right side
    81,568.88x = 4,260,832,533.17
  5. Step 5: Solve for x
    x = 4,260,832,533.17/81,568.88
  6. Step 6: Final answer
    x = 52,236.01

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Why These Related Problems?

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