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Finding the Fourth Proportional to 73,105.80, 109,650.60 and 59,935.20

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Solution

The fourth proportional to 73,105.80, 109,650.60 and 59,935.20 is: 89,896.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,105.80 : 109,650.60 = 59,935.20 : x
  2. Step 2: Convert to fraction form
    73,105.80/109,650.60 = 59,935.20/x
  3. Step 3: Cross multiply
    73,105.80x = 109,650.60 × 59,935.20
  4. Step 4: Simplify right side
    73,105.80x = 6,571,930,641.12
  5. Step 5: Solve for x
    x = 6,571,930,641.12/73,105.80
  6. Step 6: Final answer
    x = 89,896.16

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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.