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Finding the Fourth Proportional to 68,995.92, 103,472.28 and 45,745.68

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Solution

The fourth proportional to 68,995.92, 103,472.28 and 45,745.68 is: 68,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995.92 : 103,472.28 = 45,745.68 : x
  2. Step 2: Convert to fraction form
    68,995.92/103,472.28 = 45,745.68/x
  3. Step 3: Cross multiply
    68,995.92x = 103,472.28 × 45,745.68
  4. Step 4: Simplify right side
    68,995.92x = 4,733,409,809.75
  5. Step 5: Solve for x
    x = 4,733,409,809.75/68,995.92
  6. Step 6: Final answer
    x = 68,604.20

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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.