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Finding the Fourth Proportional to 19,137.63, 26,410.95 and 11,179.38

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Solution

The fourth proportional to 19,137.63, 26,410.95 and 11,179.38 is: 15,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,137.63 : 26,410.95 = 11,179.38 : x
  2. Step 2: Convert to fraction form
    19,137.63/26,410.95 = 11,179.38/x
  3. Step 3: Cross multiply
    19,137.63x = 26,410.95 × 11,179.38
  4. Step 4: Simplify right side
    19,137.63x = 295,258,046.21
  5. Step 5: Solve for x
    x = 295,258,046.21/19,137.63
  6. Step 6: Final answer
    x = 15,428.14

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Why These Related Problems?

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