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Finding the Fourth Proportional to 18,391.36, 27,587.92 and 5,244.64

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Solution

The fourth proportional to 18,391.36, 27,587.92 and 5,244.64 is: 7,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.36 : 27,587.92 = 5,244.64 : x
  2. Step 2: Convert to fraction form
    18,391.36/27,587.92 = 5,244.64/x
  3. Step 3: Cross multiply
    18,391.36x = 27,587.92 × 5,244.64
  4. Step 4: Simplify right side
    18,391.36x = 144,688,708.75
  5. Step 5: Solve for x
    x = 144,688,708.75/18,391.36
  6. Step 6: Final answer
    x = 7,867.21

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.