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Finding the Fourth Proportional to 248,408.58, 372,667.85 and 90,636.58

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Solution

The fourth proportional to 248,408.58, 372,667.85 and 90,636.58 is: 135,974.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,408.58 : 372,667.85 = 90,636.58 : x
  2. Step 2: Convert to fraction form
    248,408.58/372,667.85 = 90,636.58/x
  3. Step 3: Cross multiply
    248,408.58x = 372,667.85 × 90,636.58
  4. Step 4: Simplify right side
    248,408.58x = 33,777,337,536.61
  5. Step 5: Solve for x
    x = 33,777,337,536.61/248,408.58
  6. Step 6: Final answer
    x = 135,974.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.