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Finding the Fourth Proportional to 269,611.20, 404,416.80 and 185,630.40

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Solution

The fourth proportional to 269,611.20, 404,416.80 and 185,630.40 is: 278,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,611.20 : 404,416.80 = 185,630.40 : x
  2. Step 2: Convert to fraction form
    269,611.20/404,416.80 = 185,630.40/x
  3. Step 3: Cross multiply
    269,611.20x = 404,416.80 × 185,630.40
  4. Step 4: Simplify right side
    269,611.20x = 75,072,052,350.72
  5. Step 5: Solve for x
    x = 75,072,052,350.72/269,611.20
  6. Step 6: Final answer
    x = 278,445.60

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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.