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Finding the Fourth Proportional to 14,965.10, 20,651.52 and 8,250.56

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Solution

The fourth proportional to 14,965.10, 20,651.52 and 8,250.56 is: 11,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,965.10 : 20,651.52 = 8,250.56 : x
  2. Step 2: Convert to fraction form
    14,965.10/20,651.52 = 8,250.56/x
  3. Step 3: Cross multiply
    14,965.10x = 20,651.52 × 8,250.56
  4. Step 4: Simplify right side
    14,965.10x = 170,386,604.85
  5. Step 5: Solve for x
    x = 170,386,604.85/14,965.10
  6. Step 6: Final answer
    x = 11,385.60

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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.