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Finding the Fourth Proportional to 543,991.34, 810,519.46 and 513,432.88

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Solution

The fourth proportional to 543,991.34, 810,519.46 and 513,432.88 is: 764,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,991.34 : 810,519.46 = 513,432.88 : x
  2. Step 2: Convert to fraction form
    543,991.34/810,519.46 = 513,432.88/x
  3. Step 3: Cross multiply
    543,991.34x = 810,519.46 × 513,432.88
  4. Step 4: Simplify right side
    543,991.34x = 416,147,340,643.85
  5. Step 5: Solve for x
    x = 416,147,340,643.85/543,991.34
  6. Step 6: Final answer
    x = 764,988.91

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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.