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Finding the Fourth Proportional to 543,990.34, 810,517.97 and 513,431.88

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Solution

The fourth proportional to 543,990.34, 810,517.97 and 513,431.88 is: 764,987.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,990.34 : 810,517.97 = 513,431.88 : x
  2. Step 2: Convert to fraction form
    543,990.34/810,517.97 = 513,431.88/x
  3. Step 3: Cross multiply
    543,990.34x = 810,517.97 × 513,431.88
  4. Step 4: Simplify right side
    543,990.34x = 416,145,765,110.88
  5. Step 5: Solve for x
    x = 416,145,765,110.88/543,990.34
  6. Step 6: Final answer
    x = 764,987.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.