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Finding the Fourth Proportional to 518,568.20, 776,930.70 and 444,840.20

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Solution

The fourth proportional to 518,568.20, 776,930.70 and 444,840.20 is: 666,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,568.20 : 776,930.70 = 444,840.20 : x
  2. Step 2: Convert to fraction form
    518,568.20/776,930.70 = 444,840.20/x
  3. Step 3: Cross multiply
    518,568.20x = 776,930.70 × 444,840.20
  4. Step 4: Simplify right side
    518,568.20x = 345,610,007,974.14
  5. Step 5: Solve for x
    x = 345,610,007,974.14/518,568.20
  6. Step 6: Final answer
    x = 666,469.73

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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.