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Finding the Fourth Proportional to 326,412.20, 489,611.82 and 214,797.44

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Solution

The fourth proportional to 326,412.20, 489,611.82 and 214,797.44 is: 322,191.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,412.20 : 489,611.82 = 214,797.44 : x
  2. Step 2: Convert to fraction form
    326,412.20/489,611.82 = 214,797.44/x
  3. Step 3: Cross multiply
    326,412.20x = 489,611.82 × 214,797.44
  4. Step 4: Simplify right side
    326,412.20x = 105,167,365,529.74
  5. Step 5: Solve for x
    x = 105,167,365,529.74/326,412.20
  6. Step 6: Final answer
    x = 322,191.90

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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.