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Finding the Fourth Proportional to 79,361.21, 109,521.25 and 43,551.51

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Solution

The fourth proportional to 79,361.21, 109,521.25 and 43,551.51 is: 60,102.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,361.21 : 109,521.25 = 43,551.51 : x
  2. Step 2: Convert to fraction form
    79,361.21/109,521.25 = 43,551.51/x
  3. Step 3: Cross multiply
    79,361.21x = 109,521.25 × 43,551.51
  4. Step 4: Simplify right side
    79,361.21x = 4,769,815,814.59
  5. Step 5: Solve for x
    x = 4,769,815,814.59/79,361.21
  6. Step 6: Final answer
    x = 60,102.61

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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.