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Finding the Fourth Proportional to 11,965.24, 16,520.93 and 7,255.90

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Solution

The fourth proportional to 11,965.24, 16,520.93 and 7,255.90 is: 10,018.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,965.24 : 16,520.93 = 7,255.90 : x
  2. Step 2: Convert to fraction form
    11,965.24/16,520.93 = 7,255.90/x
  3. Step 3: Cross multiply
    11,965.24x = 16,520.93 × 7,255.90
  4. Step 4: Simplify right side
    11,965.24x = 119,874,215.99
  5. Step 5: Solve for x
    x = 119,874,215.99/11,965.24
  6. Step 6: Final answer
    x = 10,018.54

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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.