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Finding the Fourth Proportional to 699,823.92, 965,754.63 and 393,900.12

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Solution

The fourth proportional to 699,823.92, 965,754.63 and 393,900.12 is: 543,580.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,823.92 : 965,754.63 = 393,900.12 : x
  2. Step 2: Convert to fraction form
    699,823.92/965,754.63 = 393,900.12/x
  3. Step 3: Cross multiply
    699,823.92x = 965,754.63 × 393,900.12
  4. Step 4: Simplify right side
    699,823.92x = 380,410,864,647.56
  5. Step 5: Solve for x
    x = 380,410,864,647.56/699,823.92
  6. Step 6: Final answer
    x = 543,580.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.