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Finding the Fourth Proportional to 625,893.68, 863,669.77 and 384,186.44

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Solution

The fourth proportional to 625,893.68, 863,669.77 and 384,186.44 is: 530,138.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,893.68 : 863,669.77 = 384,186.44 : x
  2. Step 2: Convert to fraction form
    625,893.68/863,669.77 = 384,186.44/x
  3. Step 3: Cross multiply
    625,893.68x = 863,669.77 × 384,186.44
  4. Step 4: Simplify right side
    625,893.68x = 331,810,208,993.10
  5. Step 5: Solve for x
    x = 331,810,208,993.10/625,893.68
  6. Step 6: Final answer
    x = 530,138.30

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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.