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Finding the Fourth Proportional to 18,993.81, 28,491.09 and 5,846.17

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Solution

The fourth proportional to 18,993.81, 28,491.09 and 5,846.17 is: 8,769.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,993.81 : 28,491.09 = 5,846.17 : x
  2. Step 2: Convert to fraction form
    18,993.81/28,491.09 = 5,846.17/x
  3. Step 3: Cross multiply
    18,993.81x = 28,491.09 × 5,846.17
  4. Step 4: Simplify right side
    18,993.81x = 166,563,812.24
  5. Step 5: Solve for x
    x = 166,563,812.24/18,993.81
  6. Step 6: Final answer
    x = 8,769.37

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1.5x scale

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.