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Finding the Fourth Proportional to 18,469.10, 25,481.03 and 10,509.33

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Solution

The fourth proportional to 18,469.10, 25,481.03 and 10,509.33 is: 14,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.10 : 25,481.03 = 10,509.33 : x
  2. Step 2: Convert to fraction form
    18,469.10/25,481.03 = 10,509.33/x
  3. Step 3: Cross multiply
    18,469.10x = 25,481.03 × 10,509.33
  4. Step 4: Simplify right side
    18,469.10x = 267,788,553.01
  5. Step 5: Solve for x
    x = 267,788,553.01/18,469.10
  6. Step 6: Final answer
    x = 14,499.28

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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.