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Finding the Fourth Proportional to 403,400.30, 605,100.45 and 166,912.70

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Solution

The fourth proportional to 403,400.30, 605,100.45 and 166,912.70 is: 250,369.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,400.30 : 605,100.45 = 166,912.70 : x
  2. Step 2: Convert to fraction form
    403,400.30/605,100.45 = 166,912.70/x
  3. Step 3: Cross multiply
    403,400.30x = 605,100.45 × 166,912.70
  4. Step 4: Simplify right side
    403,400.30x = 100,998,949,880.72
  5. Step 5: Solve for x
    x = 100,998,949,880.72/403,400.30
  6. Step 6: Final answer
    x = 250,369.05

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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.