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Finding the Fourth Proportional to 286,701.60, 395,703.05 and 189,906.60

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Solution

The fourth proportional to 286,701.60, 395,703.05 and 189,906.60 is: 262,107.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,701.60 : 395,703.05 = 189,906.60 : x
  2. Step 2: Convert to fraction form
    286,701.60/395,703.05 = 189,906.60/x
  3. Step 3: Cross multiply
    286,701.60x = 395,703.05 × 189,906.60
  4. Step 4: Simplify right side
    286,701.60x = 75,146,619,885.60
  5. Step 5: Solve for x
    x = 75,146,619,885.60/286,701.60
  6. Step 6: Final answer
    x = 262,107.43

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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.