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Finding the Fourth Proportional to 361,880.78, 543,669.47 and 341,431.25

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Solution

The fourth proportional to 361,880.78, 543,669.47 and 341,431.25 is: 512,947.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,880.78 : 543,669.47 = 341,431.25 : x
  2. Step 2: Convert to fraction form
    361,880.78/543,669.47 = 341,431.25/x
  3. Step 3: Cross multiply
    361,880.78x = 543,669.47 × 341,431.25
  4. Step 4: Simplify right side
    361,880.78x = 185,625,745,021.78
  5. Step 5: Solve for x
    x = 185,625,745,021.78/361,880.78
  6. Step 6: Final answer
    x = 512,947.23

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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.