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Finding the Fourth Proportional to 18,442.92, 25,450.47 and 10,891.68

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Solution

The fourth proportional to 18,442.92, 25,450.47 and 10,891.68 is: 15,030.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.92 : 25,450.47 = 10,891.68 : x
  2. Step 2: Convert to fraction form
    18,442.92/25,450.47 = 10,891.68/x
  3. Step 3: Cross multiply
    18,442.92x = 25,450.47 × 10,891.68
  4. Step 4: Simplify right side
    18,442.92x = 277,198,279.65
  5. Step 5: Solve for x
    x = 277,198,279.65/18,442.92
  6. Step 6: Final answer
    x = 15,030.07

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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.