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Finding the Fourth Proportional to 51,361.74, 70,879.61 and 29,005.74

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Solution

The fourth proportional to 51,361.74, 70,879.61 and 29,005.74 is: 40,028.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,361.74 : 70,879.61 = 29,005.74 : x
  2. Step 2: Convert to fraction form
    51,361.74/70,879.61 = 29,005.74/x
  3. Step 3: Cross multiply
    51,361.74x = 70,879.61 × 29,005.74
  4. Step 4: Simplify right side
    51,361.74x = 2,055,915,538.96
  5. Step 5: Solve for x
    x = 2,055,915,538.96/51,361.74
  6. Step 6: Final answer
    x = 40,028.15

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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.