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Finding the Fourth Proportional to 19,462.32, 26,857.80 and 11,079

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Solution

The fourth proportional to 19,462.32, 26,857.80 and 11,079 is: 15,288.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,462.32 : 26,857.80 = 11,079 : x
  2. Step 2: Convert to fraction form
    19,462.32/26,857.80 = 11,079/x
  3. Step 3: Cross multiply
    19,462.32x = 26,857.80 × 11,079
  4. Step 4: Simplify right side
    19,462.32x = 297,557,566.20
  5. Step 5: Solve for x
    x = 297,557,566.20/19,462.32
  6. Step 6: Final answer
    x = 15,288.91

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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.