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Finding the Fourth Proportional to 262,863.80, 394,554.90 and 129,894.20

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Solution

The fourth proportional to 262,863.80, 394,554.90 and 129,894.20 is: 194,969.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,863.80 : 394,554.90 = 129,894.20 : x
  2. Step 2: Convert to fraction form
    262,863.80/394,554.90 = 129,894.20/x
  3. Step 3: Cross multiply
    262,863.80x = 394,554.90 × 129,894.20
  4. Step 4: Simplify right side
    262,863.80x = 51,250,393,091.58
  5. Step 5: Solve for x
    x = 51,250,393,091.58/262,863.80
  6. Step 6: Final answer
    x = 194,969.38

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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.