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Finding the Fourth Proportional to 111,090.89, 166,596.92 and 39,994.43

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Solution

The fourth proportional to 111,090.89, 166,596.92 and 39,994.43 is: 59,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,090.89 : 166,596.92 = 39,994.43 : x
  2. Step 2: Convert to fraction form
    111,090.89/166,596.92 = 39,994.43/x
  3. Step 3: Cross multiply
    111,090.89x = 166,596.92 × 39,994.43
  4. Step 4: Simplify right side
    111,090.89x = 6,662,947,822.20
  5. Step 5: Solve for x
    x = 6,662,947,822.20/111,090.89
  6. Step 6: Final answer
    x = 59,977.45

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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.