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Finding the Fourth Proportional to 72,826.85, 109,252.76 and 33,387.34

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Solution

The fourth proportional to 72,826.85, 109,252.76 and 33,387.34 is: 50,086.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,826.85 : 109,252.76 = 33,387.34 : x
  2. Step 2: Convert to fraction form
    72,826.85/109,252.76 = 33,387.34/x
  3. Step 3: Cross multiply
    72,826.85x = 109,252.76 × 33,387.34
  4. Step 4: Simplify right side
    72,826.85x = 3,647,658,603.99
  5. Step 5: Solve for x
    x = 3,647,658,603.99/72,826.85
  6. Step 6: Final answer
    x = 50,086.73

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1.5x scale

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.