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Finding the Fourth Proportional to 18,443.70, 27,662.58 and 5,293.08

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Solution

The fourth proportional to 18,443.70, 27,662.58 and 5,293.08 is: 7,938.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443.70 : 27,662.58 = 5,293.08 : x
  2. Step 2: Convert to fraction form
    18,443.70/27,662.58 = 5,293.08/x
  3. Step 3: Cross multiply
    18,443.70x = 27,662.58 × 5,293.08
  4. Step 4: Simplify right side
    18,443.70x = 146,420,248.95
  5. Step 5: Solve for x
    x = 146,420,248.95/18,443.70
  6. Step 6: Final answer
    x = 7,938.77

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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.