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Finding the Fourth Proportional to 69,305.20, 103,698.30 and 49,360.80

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Solution

The fourth proportional to 69,305.20, 103,698.30 and 49,360.80 is: 73,856.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,305.20 : 103,698.30 = 49,360.80 : x
  2. Step 2: Convert to fraction form
    69,305.20/103,698.30 = 49,360.80/x
  3. Step 3: Cross multiply
    69,305.20x = 103,698.30 × 49,360.80
  4. Step 4: Simplify right side
    69,305.20x = 5,118,631,046.64
  5. Step 5: Solve for x
    x = 5,118,631,046.64/69,305.20
  6. Step 6: Final answer
    x = 73,856.38

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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.