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Finding the Fourth Proportional to 263,324.60, 394,986.90 and 115,580.60

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Solution

The fourth proportional to 263,324.60, 394,986.90 and 115,580.60 is: 173,370.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,324.60 : 394,986.90 = 115,580.60 : x
  2. Step 2: Convert to fraction form
    263,324.60/394,986.90 = 115,580.60/x
  3. Step 3: Cross multiply
    263,324.60x = 394,986.90 × 115,580.60
  4. Step 4: Simplify right side
    263,324.60x = 45,652,822,894.14
  5. Step 5: Solve for x
    x = 45,652,822,894.14/263,324.60
  6. Step 6: Final answer
    x = 173,370.90

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1.5x scale

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.