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Finding the Fourth Proportional to 66,361.72, 99,514.64 and 26,891.24

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Solution

The fourth proportional to 66,361.72, 99,514.64 and 26,891.24 is: 40,325.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361.72 : 99,514.64 = 26,891.24 : x
  2. Step 2: Convert to fraction form
    66,361.72/99,514.64 = 26,891.24/x
  3. Step 3: Cross multiply
    66,361.72x = 99,514.64 × 26,891.24
  4. Step 4: Simplify right side
    66,361.72x = 2,676,072,067.75
  5. Step 5: Solve for x
    x = 2,676,072,067.75/66,361.72
  6. Step 6: Final answer
    x = 40,325.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.