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Finding the Fourth Proportional to 613,141,355.13, 919,667,544.84 and 239,578,999.83

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Solution

The fourth proportional to 613,141,355.13, 919,667,544.84 and 239,578,999.83 is: 359,351,116.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,141,355.13 : 919,667,544.84 = 239,578,999.83 : x
  2. Step 2: Convert to fraction form
    613,141,355.13/919,667,544.84 = 239,578,999.83/x
  3. Step 3: Cross multiply
    613,141,355.13x = 919,667,544.84 × 239,578,999.83
  4. Step 4: Simplify right side
    613,141,355.13x = 220,333,030,568,878,912
  5. Step 5: Solve for x
    x = 220,333,030,568,878,912/613,141,355.13
  6. Step 6: Final answer
    x = 359,351,116.55

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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.