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Finding the Fourth Proportional to 691,595,889.82, 954,399,474.44 and 374,056,490.32

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Solution

The fourth proportional to 691,595,889.82, 954,399,474.44 and 374,056,490.32 is: 516,196,413.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,595,889.82 : 954,399,474.44 = 374,056,490.32 : x
  2. Step 2: Convert to fraction form
    691,595,889.82/954,399,474.44 = 374,056,490.32/x
  3. Step 3: Cross multiply
    691,595,889.82x = 954,399,474.44 × 374,056,490.32
  4. Step 4: Simplify right side
    691,595,889.82x = 356,999,317,772,278,976
  5. Step 5: Solve for x
    x = 356,999,317,772,278,976/691,595,889.82
  6. Step 6: Final answer
    x = 516,196,413.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.