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Finding the Fourth Proportional to 60,745.20, 91,078.20 and 54,524.40

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Solution

The fourth proportional to 60,745.20, 91,078.20 and 54,524.40 is: 81,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,745.20 : 91,078.20 = 54,524.40 : x
  2. Step 2: Convert to fraction form
    60,745.20/91,078.20 = 54,524.40/x
  3. Step 3: Cross multiply
    60,745.20x = 91,078.20 × 54,524.40
  4. Step 4: Simplify right side
    60,745.20x = 4,965,984,208.08
  5. Step 5: Solve for x
    x = 4,965,984,208.08/60,745.20
  6. Step 6: Final answer
    x = 81,751.06

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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.