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Finding the Fourth Proportional to 160,694.94, 221,745.09 and 91,784.06

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Solution

The fourth proportional to 160,694.94, 221,745.09 and 91,784.06 is: 126,654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,694.94 : 221,745.09 = 91,784.06 : x
  2. Step 2: Convert to fraction form
    160,694.94/221,745.09 = 91,784.06/x
  3. Step 3: Cross multiply
    160,694.94x = 221,745.09 × 91,784.06
  4. Step 4: Simplify right side
    160,694.94x = 20,352,665,335.93
  5. Step 5: Solve for x
    x = 20,352,665,335.93/160,694.94
  6. Step 6: Final answer
    x = 126,654.05

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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.