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Finding the Fourth Proportional to 110,791.80, 166,187.70 and 40,698.45

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Solution

The fourth proportional to 110,791.80, 166,187.70 and 40,698.45 is: 61,047.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,791.80 : 166,187.70 = 40,698.45 : x
  2. Step 2: Convert to fraction form
    110,791.80/166,187.70 = 40,698.45/x
  3. Step 3: Cross multiply
    110,791.80x = 166,187.70 × 40,698.45
  4. Step 4: Simplify right side
    110,791.80x = 6,763,581,799.07
  5. Step 5: Solve for x
    x = 6,763,581,799.07/110,791.80
  6. Step 6: Final answer
    x = 61,047.68

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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.