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Finding the Fourth Proportional to 19,851.15, 27,392.54 and 11,893.17

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Solution

The fourth proportional to 19,851.15, 27,392.54 and 11,893.17 is: 16,411.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,851.15 : 27,392.54 = 11,893.17 : x
  2. Step 2: Convert to fraction form
    19,851.15/27,392.54 = 11,893.17/x
  3. Step 3: Cross multiply
    19,851.15x = 27,392.54 × 11,893.17
  4. Step 4: Simplify right side
    19,851.15x = 325,784,027.72
  5. Step 5: Solve for x
    x = 325,784,027.72/19,851.15
  6. Step 6: Final answer
    x = 16,411.35

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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.