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Finding the Fourth Proportional to 48,991.87, 73,488.21 and 15,711.99

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Solution

The fourth proportional to 48,991.87, 73,488.21 and 15,711.99 is: 23,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,991.87 : 73,488.21 = 15,711.99 : x
  2. Step 2: Convert to fraction form
    48,991.87/73,488.21 = 15,711.99/x
  3. Step 3: Cross multiply
    48,991.87x = 73,488.21 × 15,711.99
  4. Step 4: Simplify right side
    48,991.87x = 1,154,646,020.64
  5. Step 5: Solve for x
    x = 1,154,646,020.64/48,991.87
  6. Step 6: Final answer
    x = 23,568.11

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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.