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Finding the Fourth Proportional to 111,462.35, 166,908.07 and 61,486.90

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Solution

The fourth proportional to 111,462.35, 166,908.07 and 61,486.90 is: 92,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,462.35 : 166,908.07 = 61,486.90 : x
  2. Step 2: Convert to fraction form
    111,462.35/166,908.07 = 61,486.90/x
  3. Step 3: Cross multiply
    111,462.35x = 166,908.07 × 61,486.90
  4. Step 4: Simplify right side
    111,462.35x = 10,262,659,809.28
  5. Step 5: Solve for x
    x = 10,262,659,809.28/111,462.35
  6. Step 6: Final answer
    x = 92,072.88

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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.