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Finding the Fourth Proportional to 269,392.60, 404,108.10 and 82,403.80

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Solution

The fourth proportional to 269,392.60, 404,108.10 and 82,403.80 is: 123,611.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,392.60 : 404,108.10 = 82,403.80 : x
  2. Step 2: Convert to fraction form
    269,392.60/404,108.10 = 82,403.80/x
  3. Step 3: Cross multiply
    269,392.60x = 404,108.10 × 82,403.80
  4. Step 4: Simplify right side
    269,392.60x = 33,300,043,050.78
  5. Step 5: Solve for x
    x = 33,300,043,050.78/269,392.60
  6. Step 6: Final answer
    x = 123,611.57

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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.