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Finding the Fourth Proportional to 165,687.60, 248,725.80 and 164,521.20

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Solution

The fourth proportional to 165,687.60, 248,725.80 and 164,521.20 is: 246,974.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,687.60 : 248,725.80 = 164,521.20 : x
  2. Step 2: Convert to fraction form
    165,687.60/248,725.80 = 164,521.20/x
  3. Step 3: Cross multiply
    165,687.60x = 248,725.80 × 164,521.20
  4. Step 4: Simplify right side
    165,687.60x = 40,920,667,086.96
  5. Step 5: Solve for x
    x = 40,920,667,086.96/165,687.60
  6. Step 6: Final answer
    x = 246,974.83

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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.