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Finding the Fourth Proportional to 18,803.34, 25,940.94 and 11,628.16

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Solution

The fourth proportional to 18,803.34, 25,940.94 and 11,628.16 is: 16,042.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803.34 : 25,940.94 = 11,628.16 : x
  2. Step 2: Convert to fraction form
    18,803.34/25,940.94 = 11,628.16/x
  3. Step 3: Cross multiply
    18,803.34x = 25,940.94 × 11,628.16
  4. Step 4: Simplify right side
    18,803.34x = 301,645,400.87
  5. Step 5: Solve for x
    x = 301,645,400.87/18,803.34
  6. Step 6: Final answer
    x = 16,042.12

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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.