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Finding the Fourth Proportional to 18,491.49, 25,516.49 and 10,940.67

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Solution

The fourth proportional to 18,491.49, 25,516.49 and 10,940.67 is: 15,097.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.49 : 25,516.49 = 10,940.67 : x
  2. Step 2: Convert to fraction form
    18,491.49/25,516.49 = 10,940.67/x
  3. Step 3: Cross multiply
    18,491.49x = 25,516.49 × 10,940.67
  4. Step 4: Simplify right side
    18,491.49x = 279,167,441.94
  5. Step 5: Solve for x
    x = 279,167,441.94/18,491.49
  6. Step 6: Final answer
    x = 15,097.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.