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Finding the Fourth Proportional to 18,076.10, 27,111.04 and 4,928.48

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Solution

The fourth proportional to 18,076.10, 27,111.04 and 4,928.48 is: 7,391.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,076.10 : 27,111.04 = 4,928.48 : x
  2. Step 2: Convert to fraction form
    18,076.10/27,111.04 = 4,928.48/x
  3. Step 3: Cross multiply
    18,076.10x = 27,111.04 × 4,928.48
  4. Step 4: Simplify right side
    18,076.10x = 133,616,172.21
  5. Step 5: Solve for x
    x = 133,616,172.21/18,076.10
  6. Step 6: Final answer
    x = 7,391.87

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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.