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Finding the Fourth Proportional to 663,552,503.20, 995,328,754.80 and 323,813,879.20

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Solution

The fourth proportional to 663,552,503.20, 995,328,754.80 and 323,813,879.20 is: 485,720,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,503.20 : 995,328,754.80 = 323,813,879.20 : x
  2. Step 2: Convert to fraction form
    663,552,503.20/995,328,754.80 = 323,813,879.20/x
  3. Step 3: Cross multiply
    663,552,503.20x = 995,328,754.80 × 323,813,879.20
  4. Step 4: Simplify right side
    663,552,503.20x = 322,301,265,171,093,568
  5. Step 5: Solve for x
    x = 322,301,265,171,093,568/663,552,503.20
  6. Step 6: Final answer
    x = 485,720,818.80

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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.