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Finding the Fourth Proportional to 22,396.88, 30,912.36 and 13,444.76

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Solution

The fourth proportional to 22,396.88, 30,912.36 and 13,444.76 is: 18,556.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,396.88 : 30,912.36 = 13,444.76 : x
  2. Step 2: Convert to fraction form
    22,396.88/30,912.36 = 13,444.76/x
  3. Step 3: Cross multiply
    22,396.88x = 30,912.36 × 13,444.76
  4. Step 4: Simplify right side
    22,396.88x = 415,609,261.23
  5. Step 5: Solve for x
    x = 415,609,261.23/22,396.88
  6. Step 6: Final answer
    x = 18,556.57

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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.