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Finding the Fourth Proportional to 110,930.80, 166,396.20 and 104,807.20

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Solution

The fourth proportional to 110,930.80, 166,396.20 and 104,807.20 is: 157,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,930.80 : 166,396.20 = 104,807.20 : x
  2. Step 2: Convert to fraction form
    110,930.80/166,396.20 = 104,807.20/x
  3. Step 3: Cross multiply
    110,930.80x = 166,396.20 × 104,807.20
  4. Step 4: Simplify right side
    110,930.80x = 17,439,519,812.64
  5. Step 5: Solve for x
    x = 17,439,519,812.64/110,930.80
  6. Step 6: Final answer
    x = 157,210.80

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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.