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Finding the Fourth Proportional to 18,436.24, 27,643.24 and 7,344.64

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Solution

The fourth proportional to 18,436.24, 27,643.24 and 7,344.64 is: 11,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.24 : 27,643.24 = 7,344.64 : x
  2. Step 2: Convert to fraction form
    18,436.24/27,643.24 = 7,344.64/x
  3. Step 3: Cross multiply
    18,436.24x = 27,643.24 × 7,344.64
  4. Step 4: Simplify right side
    18,436.24x = 203,029,646.23
  5. Step 5: Solve for x
    x = 203,029,646.23/18,436.24
  6. Step 6: Final answer
    x = 11,012.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.