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Finding the Fourth Proportional to 275,620.64, 380,415.72 and 168,167.60

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Solution

The fourth proportional to 275,620.64, 380,415.72 and 168,167.60 is: 232,107.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,620.64 : 380,415.72 = 168,167.60 : x
  2. Step 2: Convert to fraction form
    275,620.64/380,415.72 = 168,167.60/x
  3. Step 3: Cross multiply
    275,620.64x = 380,415.72 × 168,167.60
  4. Step 4: Simplify right side
    275,620.64x = 63,973,598,634.67
  5. Step 5: Solve for x
    x = 63,973,598,634.67/275,620.64
  6. Step 6: Final answer
    x = 232,107.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.