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Finding the Fourth Proportional to 19,476.11, 26,879.03 and 11,927.43

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Solution

The fourth proportional to 19,476.11, 26,879.03 and 11,927.43 is: 16,461.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,476.11 : 26,879.03 = 11,927.43 : x
  2. Step 2: Convert to fraction form
    19,476.11/26,879.03 = 11,927.43/x
  3. Step 3: Cross multiply
    19,476.11x = 26,879.03 × 11,927.43
  4. Step 4: Simplify right side
    19,476.11x = 320,597,689.16
  5. Step 5: Solve for x
    x = 320,597,689.16/19,476.11
  6. Step 6: Final answer
    x = 16,461.08

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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.