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Finding the Fourth Proportional to 663,846,019.20, 995,769,028.80 and 663,846,019.20

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Solution

The fourth proportional to 663,846,019.20, 995,769,028.80 and 663,846,019.20 is: 995,769,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,846,019.20 : 995,769,028.80 = 663,846,019.20 : x
  2. Step 2: Convert to fraction form
    663,846,019.20/995,769,028.80 = 663,846,019.20/x
  3. Step 3: Cross multiply
    663,846,019.20x = 995,769,028.80 × 663,846,019.20
  4. Step 4: Simplify right side
    663,846,019.20x = 661,037,305,811,530,112
  5. Step 5: Solve for x
    x = 661,037,305,811,530,112/663,846,019.20
  6. Step 6: Final answer
    x = 995,769,028.80

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Double scale
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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.