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Finding the Fourth Proportional to 18,164.42, 25,067.85 and 11,090.42

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Solution

The fourth proportional to 18,164.42, 25,067.85 and 11,090.42 is: 15,305.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.42 : 25,067.85 = 11,090.42 : x
  2. Step 2: Convert to fraction form
    18,164.42/25,067.85 = 11,090.42/x
  3. Step 3: Cross multiply
    18,164.42x = 25,067.85 × 11,090.42
  4. Step 4: Simplify right side
    18,164.42x = 278,012,985.00
  5. Step 5: Solve for x
    x = 278,012,985.00/18,164.42
  6. Step 6: Final answer
    x = 15,305.36

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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.