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Finding the Fourth Proportional to 18,791.22, 25,925.22 and 11,232.30

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Solution

The fourth proportional to 18,791.22, 25,925.22 and 11,232.30 is: 15,496.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.22 : 25,925.22 = 11,232.30 : x
  2. Step 2: Convert to fraction form
    18,791.22/25,925.22 = 11,232.30/x
  3. Step 3: Cross multiply
    18,791.22x = 25,925.22 × 11,232.30
  4. Step 4: Simplify right side
    18,791.22x = 291,199,848.61
  5. Step 5: Solve for x
    x = 291,199,848.61/18,791.22
  6. Step 6: Final answer
    x = 15,496.59

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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.