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Finding the Fourth Proportional to 19,142.25, 26,415.09 and 11,184

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Solution

The fourth proportional to 19,142.25, 26,415.09 and 11,184 is: 15,433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.25 : 26,415.09 = 11,184 : x
  2. Step 2: Convert to fraction form
    19,142.25/26,415.09 = 11,184/x
  3. Step 3: Cross multiply
    19,142.25x = 26,415.09 × 11,184
  4. Step 4: Simplify right side
    19,142.25x = 295,426,366.56
  5. Step 5: Solve for x
    x = 295,426,366.56/19,142.25
  6. Step 6: Final answer
    x = 15,433.21

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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.