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Finding the Fourth Proportional to 20,065.84, 27,690.80 and 11,567.92

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Solution

The fourth proportional to 20,065.84, 27,690.80 and 11,567.92 is: 15,963.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.84 : 27,690.80 = 11,567.92 : x
  2. Step 2: Convert to fraction form
    20,065.84/27,690.80 = 11,567.92/x
  3. Step 3: Cross multiply
    20,065.84x = 27,690.80 × 11,567.92
  4. Step 4: Simplify right side
    20,065.84x = 320,325,057.28
  5. Step 5: Solve for x
    x = 320,325,057.28/20,065.84
  6. Step 6: Final answer
    x = 15,963.70

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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.