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Finding the Fourth Proportional to 646,608.09, 969,912.15 and 197,331.26

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Solution

The fourth proportional to 646,608.09, 969,912.15 and 197,331.26 is: 295,996.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,608.09 : 969,912.15 = 197,331.26 : x
  2. Step 2: Convert to fraction form
    646,608.09/969,912.15 = 197,331.26/x
  3. Step 3: Cross multiply
    646,608.09x = 969,912.15 × 197,331.26
  4. Step 4: Simplify right side
    646,608.09x = 191,393,985,662.15
  5. Step 5: Solve for x
    x = 191,393,985,662.15/646,608.09
  6. Step 6: Final answer
    x = 295,996.89

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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.