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Finding the Fourth Proportional to 19,858.84, 27,408.36 and 11,480.20

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Solution

The fourth proportional to 19,858.84, 27,408.36 and 11,480.20 is: 15,844.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,858.84 : 27,408.36 = 11,480.20 : x
  2. Step 2: Convert to fraction form
    19,858.84/27,408.36 = 11,480.20/x
  3. Step 3: Cross multiply
    19,858.84x = 27,408.36 × 11,480.20
  4. Step 4: Simplify right side
    19,858.84x = 314,653,454.47
  5. Step 5: Solve for x
    x = 314,653,454.47/19,858.84
  6. Step 6: Final answer
    x = 15,844.50

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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.