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Finding the Fourth Proportional to 67,896.20, 101,844.30 and 45,345.80

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Solution

The fourth proportional to 67,896.20, 101,844.30 and 45,345.80 is: 68,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,896.20 : 101,844.30 = 45,345.80 : x
  2. Step 2: Convert to fraction form
    67,896.20/101,844.30 = 45,345.80/x
  3. Step 3: Cross multiply
    67,896.20x = 101,844.30 × 45,345.80
  4. Step 4: Simplify right side
    67,896.20x = 4,618,211,258.94
  5. Step 5: Solve for x
    x = 4,618,211,258.94/67,896.20
  6. Step 6: Final answer
    x = 68,018.70

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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.