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Finding the Fourth Proportional to 110,856.80, 166,285.20 and 109,107.20

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Solution

The fourth proportional to 110,856.80, 166,285.20 and 109,107.20 is: 163,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,856.80 : 166,285.20 = 109,107.20 : x
  2. Step 2: Convert to fraction form
    110,856.80/166,285.20 = 109,107.20/x
  3. Step 3: Cross multiply
    110,856.80x = 166,285.20 × 109,107.20
  4. Step 4: Simplify right side
    110,856.80x = 18,142,912,573.44
  5. Step 5: Solve for x
    x = 18,142,912,573.44/110,856.80
  6. Step 6: Final answer
    x = 163,660.80

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1.5x scale

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.