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Finding the Fourth Proportional to 110,851.80, 166,357.86 and 43,393.80

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Solution

The fourth proportional to 110,851.80, 166,357.86 and 43,393.80 is: 65,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,851.80 : 166,357.86 = 43,393.80 : x
  2. Step 2: Convert to fraction form
    110,851.80/166,357.86 = 43,393.80/x
  3. Step 3: Cross multiply
    110,851.80x = 166,357.86 × 43,393.80
  4. Step 4: Simplify right side
    110,851.80x = 7,218,899,705.27
  5. Step 5: Solve for x
    x = 7,218,899,705.27/110,851.80
  6. Step 6: Final answer
    x = 65,122.08

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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.