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Finding the Fourth Proportional to 12,059.20, 18,096 and 4,274.56

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Solution

The fourth proportional to 12,059.20, 18,096 and 4,274.56 is: 6,414.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,059.20 : 18,096 = 4,274.56 : x
  2. Step 2: Convert to fraction form
    12,059.20/18,096 = 4,274.56/x
  3. Step 3: Cross multiply
    12,059.20x = 18,096 × 4,274.56
  4. Step 4: Simplify right side
    12,059.20x = 77,352,437.76
  5. Step 5: Solve for x
    x = 77,352,437.76/12,059.20
  6. Step 6: Final answer
    x = 6,414.39

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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.