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Finding the Fourth Proportional to 86,185.84, 118,947.82 and 48,467.38

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Solution

The fourth proportional to 86,185.84, 118,947.82 and 48,467.38 is: 66,891.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,185.84 : 118,947.82 = 48,467.38 : x
  2. Step 2: Convert to fraction form
    86,185.84/118,947.82 = 48,467.38/x
  3. Step 3: Cross multiply
    86,185.84x = 118,947.82 × 48,467.38
  4. Step 4: Simplify right side
    86,185.84x = 5,765,089,192.11
  5. Step 5: Solve for x
    x = 5,765,089,192.11/86,185.84
  6. Step 6: Final answer
    x = 66,891.37

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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.