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Finding the Fourth Proportional to 2,621,361.42, 3,932,637.80 and 799,889.30

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Solution

The fourth proportional to 2,621,361.42, 3,932,637.80 and 799,889.30 is: 1,200,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621,361.42 : 3,932,637.80 = 799,889.30 : x
  2. Step 2: Convert to fraction form
    2,621,361.42/3,932,637.80 = 799,889.30/x
  3. Step 3: Cross multiply
    2,621,361.42x = 3,932,637.80 × 799,889.30
  4. Step 4: Simplify right side
    2,621,361.42x = 3,145,674,896,995.54
  5. Step 5: Solve for x
    x = 3,145,674,896,995.54/2,621,361.42
  6. Step 6: Final answer
    x = 1,200,015.71

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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.