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Finding the Fourth Proportional to 18,363.96, 27,541.80 and 5,216.04

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Solution

The fourth proportional to 18,363.96, 27,541.80 and 5,216.04 is: 7,822.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.96 : 27,541.80 = 5,216.04 : x
  2. Step 2: Convert to fraction form
    18,363.96/27,541.80 = 5,216.04/x
  3. Step 3: Cross multiply
    18,363.96x = 27,541.80 × 5,216.04
  4. Step 4: Simplify right side
    18,363.96x = 143,659,130.47
  5. Step 5: Solve for x
    x = 143,659,130.47/18,363.96
  6. Step 6: Final answer
    x = 7,822.88

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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.