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Finding the Fourth Proportional to 699,691.69, 965,623.38 and 393,797.37

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Solution

The fourth proportional to 699,691.69, 965,623.38 and 393,797.37 is: 543,467.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,691.69 : 965,623.38 = 393,797.37 : x
  2. Step 2: Convert to fraction form
    699,691.69/965,623.38 = 393,797.37/x
  3. Step 3: Cross multiply
    699,691.69x = 965,623.38 × 393,797.37
  4. Step 4: Simplify right side
    699,691.69x = 380,259,946,883.04
  5. Step 5: Solve for x
    x = 380,259,946,883.04/699,691.69
  6. Step 6: Final answer
    x = 543,467.86

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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.