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Finding the Fourth Proportional to 392,991.40, 541,899 and 265,445.56

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Solution

The fourth proportional to 392,991.40, 541,899 and 265,445.56 is: 366,025.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,991.40 : 541,899 = 265,445.56 : x
  2. Step 2: Convert to fraction form
    392,991.40/541,899 = 265,445.56/x
  3. Step 3: Cross multiply
    392,991.40x = 541,899 × 265,445.56
  4. Step 4: Simplify right side
    392,991.40x = 143,844,683,518.44
  5. Step 5: Solve for x
    x = 143,844,683,518.44/392,991.40
  6. Step 6: Final answer
    x = 366,025.02

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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.