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Finding the Fourth Proportional to 18,156.49, 27,231.49 and 4,829.56

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Solution

The fourth proportional to 18,156.49, 27,231.49 and 4,829.56 is: 7,243.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.49 : 27,231.49 = 4,829.56 : x
  2. Step 2: Convert to fraction form
    18,156.49/27,231.49 = 4,829.56/x
  3. Step 3: Cross multiply
    18,156.49x = 27,231.49 × 4,829.56
  4. Step 4: Simplify right side
    18,156.49x = 131,516,114.84
  5. Step 5: Solve for x
    x = 131,516,114.84/18,156.49
  6. Step 6: Final answer
    x = 7,243.48

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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.