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Finding the Fourth Proportional to 664,009.60, 995,917.20 and 190,645.60

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Solution

The fourth proportional to 664,009.60, 995,917.20 and 190,645.60 is: 285,940.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,009.60 : 995,917.20 = 190,645.60 : x
  2. Step 2: Convert to fraction form
    664,009.60/995,917.20 = 190,645.60/x
  3. Step 3: Cross multiply
    664,009.60x = 995,917.20 × 190,645.60
  4. Step 4: Simplify right side
    664,009.60x = 189,867,232,144.32
  5. Step 5: Solve for x
    x = 189,867,232,144.32/664,009.60
  6. Step 6: Final answer
    x = 285,940.49

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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.