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Finding the Fourth Proportional to 646,596.39, 969,894.60 and 197,319.60

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Solution

The fourth proportional to 646,596.39, 969,894.60 and 197,319.60 is: 295,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,596.39 : 969,894.60 = 197,319.60 : x
  2. Step 2: Convert to fraction form
    646,596.39/969,894.60 = 197,319.60/x
  3. Step 3: Cross multiply
    646,596.39x = 969,894.60 × 197,319.60
  4. Step 4: Simplify right side
    646,596.39x = 191,379,214,514.16
  5. Step 5: Solve for x
    x = 191,379,214,514.16/646,596.39
  6. Step 6: Final answer
    x = 295,979.40

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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.