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Finding the Fourth Proportional to 492,391.48, 738,324.78 and 255,495.64

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Solution

The fourth proportional to 492,391.48, 738,324.78 and 255,495.64 is: 383,107.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,391.48 : 738,324.78 = 255,495.64 : x
  2. Step 2: Convert to fraction form
    492,391.48/738,324.78 = 255,495.64/x
  3. Step 3: Cross multiply
    492,391.48x = 738,324.78 × 255,495.64
  4. Step 4: Simplify right side
    492,391.48x = 188,638,762,193.96
  5. Step 5: Solve for x
    x = 188,638,762,193.96/492,391.48
  6. Step 6: Final answer
    x = 383,107.28

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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.