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Finding the Fourth Proportional to 641,609,976.40, 962,414,964.60 and 232,679,467.60

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Solution

The fourth proportional to 641,609,976.40, 962,414,964.60 and 232,679,467.60 is: 349,019,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,609,976.40 : 962,414,964.60 = 232,679,467.60 : x
  2. Step 2: Convert to fraction form
    641,609,976.40/962,414,964.60 = 232,679,467.60/x
  3. Step 3: Cross multiply
    641,609,976.40x = 962,414,964.60 × 232,679,467.60
  4. Step 4: Simplify right side
    641,609,976.40x = 223,934,201,573,400,832
  5. Step 5: Solve for x
    x = 223,934,201,573,400,832/641,609,976.40
  6. Step 6: Final answer
    x = 349,019,201.40

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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.