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Finding the Fourth Proportional to 465,844.45, 642,888.11 and 261,959.53

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Solution

The fourth proportional to 465,844.45, 642,888.11 and 261,959.53 is: 361,516.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,844.45 : 642,888.11 = 261,959.53 : x
  2. Step 2: Convert to fraction form
    465,844.45/642,888.11 = 261,959.53/x
  3. Step 3: Cross multiply
    465,844.45x = 642,888.11 × 261,959.53
  4. Step 4: Simplify right side
    465,844.45x = 168,410,664,578.65
  5. Step 5: Solve for x
    x = 168,410,664,578.65/465,844.45
  6. Step 6: Final answer
    x = 361,516.95

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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.