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Finding the Fourth Proportional to 326,053.80, 489,080.70 and 270,066.60

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Solution

The fourth proportional to 326,053.80, 489,080.70 and 270,066.60 is: 405,099.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,053.80 : 489,080.70 = 270,066.60 : x
  2. Step 2: Convert to fraction form
    326,053.80/489,080.70 = 270,066.60/x
  3. Step 3: Cross multiply
    326,053.80x = 489,080.70 × 270,066.60
  4. Step 4: Simplify right side
    326,053.80x = 132,084,361,774.62
  5. Step 5: Solve for x
    x = 132,084,361,774.62/326,053.80
  6. Step 6: Final answer
    x = 405,099.90

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Similar ratio
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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.