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Finding the Fourth Proportional to 686,173.15, 946,893.54 and 395,796.73

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Solution

The fourth proportional to 686,173.15, 946,893.54 and 395,796.73 is: 546,184.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,173.15 : 946,893.54 = 395,796.73 : x
  2. Step 2: Convert to fraction form
    686,173.15/946,893.54 = 395,796.73/x
  3. Step 3: Cross multiply
    686,173.15x = 946,893.54 × 395,796.73
  4. Step 4: Simplify right side
    686,173.15x = 374,777,367,682.55
  5. Step 5: Solve for x
    x = 374,777,367,682.55/686,173.15
  6. Step 6: Final answer
    x = 546,184.83

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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.