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Finding the Fourth Proportional to 699,451.46, 965,243.05 and 397,645.46

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Solution

The fourth proportional to 699,451.46, 965,243.05 and 397,645.46 is: 548,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,451.46 : 965,243.05 = 397,645.46 : x
  2. Step 2: Convert to fraction form
    699,451.46/965,243.05 = 397,645.46/x
  3. Step 3: Cross multiply
    699,451.46x = 965,243.05 × 397,645.46
  4. Step 4: Simplify right side
    699,451.46x = 383,824,516,629.05
  5. Step 5: Solve for x
    x = 383,824,516,629.05/699,451.46
  6. Step 6: Final answer
    x = 548,750.75

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Double scale
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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.