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Finding the Fourth Proportional to 338,393.19, 507,571.11 and 113,730.43

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Solution

The fourth proportional to 338,393.19, 507,571.11 and 113,730.43 is: 170,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,393.19 : 507,571.11 = 113,730.43 : x
  2. Step 2: Convert to fraction form
    338,393.19/507,571.11 = 113,730.43/x
  3. Step 3: Cross multiply
    338,393.19x = 507,571.11 × 113,730.43
  4. Step 4: Simplify right side
    338,393.19x = 57,726,280,278.65
  5. Step 5: Solve for x
    x = 57,726,280,278.65/338,393.19
  6. Step 6: Final answer
    x = 170,589.37

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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.