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Finding the Fourth Proportional to 150,573.20, 225,859.80 and 80,416.40

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Solution

The fourth proportional to 150,573.20, 225,859.80 and 80,416.40 is: 120,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,573.20 : 225,859.80 = 80,416.40 : x
  2. Step 2: Convert to fraction form
    150,573.20/225,859.80 = 80,416.40/x
  3. Step 3: Cross multiply
    150,573.20x = 225,859.80 × 80,416.40
  4. Step 4: Simplify right side
    150,573.20x = 18,162,832,020.72
  5. Step 5: Solve for x
    x = 18,162,832,020.72/150,573.20
  6. Step 6: Final answer
    x = 120,624.60

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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.