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Finding the Fourth Proportional to 664,007.60, 995,914.20 and 190,643.60

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Solution

The fourth proportional to 664,007.60, 995,914.20 and 190,643.60 is: 285,937.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,007.60 : 995,914.20 = 190,643.60 : x
  2. Step 2: Convert to fraction form
    664,007.60/995,914.20 = 190,643.60/x
  3. Step 3: Cross multiply
    664,007.60x = 995,914.20 × 190,643.60
  4. Step 4: Simplify right side
    664,007.60x = 189,864,668,379.12
  5. Step 5: Solve for x
    x = 189,864,668,379.12/664,007.60
  6. Step 6: Final answer
    x = 285,937.49

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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.