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Finding the Fourth Proportional to 45,481.88, 68,139.69 and 32,970.87

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Solution

The fourth proportional to 45,481.88, 68,139.69 and 32,970.87 is: 49,396.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,481.88 : 68,139.69 = 32,970.87 : x
  2. Step 2: Convert to fraction form
    45,481.88/68,139.69 = 32,970.87/x
  3. Step 3: Cross multiply
    45,481.88x = 68,139.69 × 32,970.87
  4. Step 4: Simplify right side
    45,481.88x = 2,246,624,860.83
  5. Step 5: Solve for x
    x = 2,246,624,860.83/45,481.88
  6. Step 6: Final answer
    x = 49,396.05

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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.