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Finding the Fourth Proportional to 438,910.45, 605,745.72 and 247,936.13

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Solution

The fourth proportional to 438,910.45, 605,745.72 and 247,936.13 is: 342,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,910.45 : 605,745.72 = 247,936.13 : x
  2. Step 2: Convert to fraction form
    438,910.45/605,745.72 = 247,936.13/x
  3. Step 3: Cross multiply
    438,910.45x = 605,745.72 × 247,936.13
  4. Step 4: Simplify right side
    438,910.45x = 150,186,249,580.86
  5. Step 5: Solve for x
    x = 150,186,249,580.86/438,910.45
  6. Step 6: Final answer
    x = 342,179.71

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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.