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Finding the Fourth Proportional to 18,455, 25,468.44 and 10,072.04

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Solution

The fourth proportional to 18,455, 25,468.44 and 10,072.04 is: 13,899.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455 : 25,468.44 = 10,072.04 : x
  2. Step 2: Convert to fraction form
    18,455/25,468.44 = 10,072.04/x
  3. Step 3: Cross multiply
    18,455x = 25,468.44 × 10,072.04
  4. Step 4: Simplify right side
    18,455x = 256,519,146.42
  5. Step 5: Solve for x
    x = 256,519,146.42/18,455
  6. Step 6: Final answer
    x = 13,899.71

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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.