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Finding the Fourth Proportional to 286,188.88, 394,995.62 and 189,394.69

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Solution

The fourth proportional to 286,188.88, 394,995.62 and 189,394.69 is: 261,401.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,188.88 : 394,995.62 = 189,394.69 : x
  2. Step 2: Convert to fraction form
    286,188.88/394,995.62 = 189,394.69/x
  3. Step 3: Cross multiply
    286,188.88x = 394,995.62 × 189,394.69
  4. Step 4: Simplify right side
    286,188.88x = 74,810,070,079.31
  5. Step 5: Solve for x
    x = 74,810,070,079.31/286,188.88
  6. Step 6: Final answer
    x = 261,401.04

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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.