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Finding the Fourth Proportional to 262,934.60, 394,401.90 and 218,611.40

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Solution

The fourth proportional to 262,934.60, 394,401.90 and 218,611.40 is: 327,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,934.60 : 394,401.90 = 218,611.40 : x
  2. Step 2: Convert to fraction form
    262,934.60/394,401.90 = 218,611.40/x
  3. Step 3: Cross multiply
    262,934.60x = 394,401.90 × 218,611.40
  4. Step 4: Simplify right side
    262,934.60x = 86,220,751,521.66
  5. Step 5: Solve for x
    x = 86,220,751,521.66/262,934.60
  6. Step 6: Final answer
    x = 327,917.10

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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.