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Finding the Fourth Proportional to 14,941.94, 20,619.90 and 8,228.03

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Solution

The fourth proportional to 14,941.94, 20,619.90 and 8,228.03 is: 11,354.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,941.94 : 20,619.90 = 8,228.03 : x
  2. Step 2: Convert to fraction form
    14,941.94/20,619.90 = 8,228.03/x
  3. Step 3: Cross multiply
    14,941.94x = 20,619.90 × 8,228.03
  4. Step 4: Simplify right side
    14,941.94x = 169,661,052.70
  5. Step 5: Solve for x
    x = 169,661,052.70/14,941.94
  6. Step 6: Final answer
    x = 11,354.69

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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.