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Finding the Fourth Proportional to 686,993.07, 948,093.36 and 396,657.73

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Solution

The fourth proportional to 686,993.07, 948,093.36 and 396,657.73 is: 547,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,993.07 : 948,093.36 = 396,657.73 : x
  2. Step 2: Convert to fraction form
    686,993.07/948,093.36 = 396,657.73/x
  3. Step 3: Cross multiply
    686,993.07x = 948,093.36 × 396,657.73
  4. Step 4: Simplify right side
    686,993.07x = 376,068,562,369.84
  5. Step 5: Solve for x
    x = 376,068,562,369.84/686,993.07
  6. Step 6: Final answer
    x = 547,412.45

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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.