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Finding the Fourth Proportional to 643,533.56, 965,300.34 and 200,336.12

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Solution

The fourth proportional to 643,533.56, 965,300.34 and 200,336.12 is: 300,504.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,533.56 : 965,300.34 = 200,336.12 : x
  2. Step 2: Convert to fraction form
    643,533.56/965,300.34 = 200,336.12/x
  3. Step 3: Cross multiply
    643,533.56x = 965,300.34 × 200,336.12
  4. Step 4: Simplify right side
    643,533.56x = 193,384,524,750.28
  5. Step 5: Solve for x
    x = 193,384,524,750.28/643,533.56
  6. Step 6: Final answer
    x = 300,504.18

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Similar ratio
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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.