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Finding the Fourth Proportional to 71,410.92, 98,546.88 and 39,579.81

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Solution

The fourth proportional to 71,410.92, 98,546.88 and 39,579.81 is: 54,620.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,410.92 : 98,546.88 = 39,579.81 : x
  2. Step 2: Convert to fraction form
    71,410.92/98,546.88 = 39,579.81/x
  3. Step 3: Cross multiply
    71,410.92x = 98,546.88 × 39,579.81
  4. Step 4: Simplify right side
    71,410.92x = 3,900,466,786.49
  5. Step 5: Solve for x
    x = 3,900,466,786.49/71,410.92
  6. Step 6: Final answer
    x = 54,620.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.