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Finding the Fourth Proportional to 18,531.28, 27,797.04 and 4,680.28

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Solution

The fourth proportional to 18,531.28, 27,797.04 and 4,680.28 is: 7,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.28 : 27,797.04 = 4,680.28 : x
  2. Step 2: Convert to fraction form
    18,531.28/27,797.04 = 4,680.28/x
  3. Step 3: Cross multiply
    18,531.28x = 27,797.04 × 4,680.28
  4. Step 4: Simplify right side
    18,531.28x = 130,097,930.37
  5. Step 5: Solve for x
    x = 130,097,930.37/18,531.28
  6. Step 6: Final answer
    x = 7,020.45

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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.