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Finding the Fourth Proportional to 84,891, 117,162.54 and 51,376.44

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Solution

The fourth proportional to 84,891, 117,162.54 and 51,376.44 is: 70,907.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,891 : 117,162.54 = 51,376.44 : x
  2. Step 2: Convert to fraction form
    84,891/117,162.54 = 51,376.44/x
  3. Step 3: Cross multiply
    84,891x = 117,162.54 × 51,376.44
  4. Step 4: Simplify right side
    84,891x = 6,019,394,206.56
  5. Step 5: Solve for x
    x = 6,019,394,206.56/84,891
  6. Step 6: Final answer
    x = 70,907.33

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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.