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Finding the Fourth Proportional to 444,785.80, 667,178.70 and 411,980.80

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Solution

The fourth proportional to 444,785.80, 667,178.70 and 411,980.80 is: 617,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,785.80 : 667,178.70 = 411,980.80 : x
  2. Step 2: Convert to fraction form
    444,785.80/667,178.70 = 411,980.80/x
  3. Step 3: Cross multiply
    444,785.80x = 667,178.70 × 411,980.80
  4. Step 4: Simplify right side
    444,785.80x = 274,864,814,568.96
  5. Step 5: Solve for x
    x = 274,864,814,568.96/444,785.80
  6. Step 6: Final answer
    x = 617,971.20

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Double scale
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Similar ratio
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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.