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Finding the Fourth Proportional to 682,879.76, 1,023,991.80 and 322,750.64

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Solution

The fourth proportional to 682,879.76, 1,023,991.80 and 322,750.64 is: 483,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,879.76 : 1,023,991.80 = 322,750.64 : x
  2. Step 2: Convert to fraction form
    682,879.76/1,023,991.80 = 322,750.64/x
  3. Step 3: Cross multiply
    682,879.76x = 1,023,991.80 × 322,750.64
  4. Step 4: Simplify right side
    682,879.76x = 330,494,008,804.75
  5. Step 5: Solve for x
    x = 330,494,008,804.75/682,879.76
  6. Step 6: Final answer
    x = 483,971.01

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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.