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Finding the Fourth Proportional to 512,154.60, 768,231.90 and 245,850.90

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Solution

The fourth proportional to 512,154.60, 768,231.90 and 245,850.90 is: 368,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,154.60 : 768,231.90 = 245,850.90 : x
  2. Step 2: Convert to fraction form
    512,154.60/768,231.90 = 245,850.90/x
  3. Step 3: Cross multiply
    512,154.60x = 768,231.90 × 245,850.90
  4. Step 4: Simplify right side
    512,154.60x = 188,870,504,023.71
  5. Step 5: Solve for x
    x = 188,870,504,023.71/512,154.60
  6. Step 6: Final answer
    x = 368,776.35

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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.