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Finding the Fourth Proportional to 20,106.16, 27,688.02 and 18,822.54

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Solution

The fourth proportional to 20,106.16, 27,688.02 and 18,822.54 is: 25,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.16 : 27,688.02 = 18,822.54 : x
  2. Step 2: Convert to fraction form
    20,106.16/27,688.02 = 18,822.54/x
  3. Step 3: Cross multiply
    20,106.16x = 27,688.02 × 18,822.54
  4. Step 4: Simplify right side
    20,106.16x = 521,158,863.97
  5. Step 5: Solve for x
    x = 521,158,863.97/20,106.16
  6. Step 6: Final answer
    x = 25,920.36

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.