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Finding the Fourth Proportional to 171,679.30, 257,628.30 and 100,601.80

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Solution

The fourth proportional to 171,679.30, 257,628.30 and 100,601.80 is: 150,966.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,679.30 : 257,628.30 = 100,601.80 : x
  2. Step 2: Convert to fraction form
    171,679.30/257,628.30 = 100,601.80/x
  3. Step 3: Cross multiply
    171,679.30x = 257,628.30 × 100,601.80
  4. Step 4: Simplify right side
    171,679.30x = 25,917,870,710.94
  5. Step 5: Solve for x
    x = 25,917,870,710.94/171,679.30
  6. Step 6: Final answer
    x = 150,966.78

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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.