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Finding the Fourth Proportional to 20,674.64, 28,531.24 and 11,724.08

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Solution

The fourth proportional to 20,674.64, 28,531.24 and 11,724.08 is: 16,179.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.64 : 28,531.24 = 11,724.08 : x
  2. Step 2: Convert to fraction form
    20,674.64/28,531.24 = 11,724.08/x
  3. Step 3: Cross multiply
    20,674.64x = 28,531.24 × 11,724.08
  4. Step 4: Simplify right side
    20,674.64x = 334,502,540.26
  5. Step 5: Solve for x
    x = 334,502,540.26/20,674.64
  6. Step 6: Final answer
    x = 16,179.36

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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.