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Finding the Fourth Proportional to 18,558.64, 27,835.00 and 5,407.94

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Solution

The fourth proportional to 18,558.64, 27,835.00 and 5,407.94 is: 8,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.64 : 27,835.00 = 5,407.94 : x
  2. Step 2: Convert to fraction form
    18,558.64/27,835.00 = 5,407.94/x
  3. Step 3: Cross multiply
    18,558.64x = 27,835.00 × 5,407.94
  4. Step 4: Simplify right side
    18,558.64x = 150,530,065.97
  5. Step 5: Solve for x
    x = 150,530,065.97/18,558.64
  6. Step 6: Final answer
    x = 8,111.05

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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.