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Finding the Fourth Proportional to 207,611.15, 311,416.73 and 49,839.60

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Solution

The fourth proportional to 207,611.15, 311,416.73 and 49,839.60 is: 74,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,611.15 : 311,416.73 = 49,839.60 : x
  2. Step 2: Convert to fraction form
    207,611.15/311,416.73 = 49,839.60/x
  3. Step 3: Cross multiply
    207,611.15x = 311,416.73 × 49,839.60
  4. Step 4: Simplify right side
    207,611.15x = 15,520,885,007.31
  5. Step 5: Solve for x
    x = 15,520,885,007.31/207,611.15
  6. Step 6: Final answer
    x = 74,759.40

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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.