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Finding the Fourth Proportional to 14,619.18, 20,173.25 and 8,649.81

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Solution

The fourth proportional to 14,619.18, 20,173.25 and 8,649.81 is: 11,936.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,619.18 : 20,173.25 = 8,649.81 : x
  2. Step 2: Convert to fraction form
    14,619.18/20,173.25 = 8,649.81/x
  3. Step 3: Cross multiply
    14,619.18x = 20,173.25 × 8,649.81
  4. Step 4: Simplify right side
    14,619.18x = 174,494,857.94
  5. Step 5: Solve for x
    x = 174,494,857.94/14,619.18
  6. Step 6: Final answer
    x = 11,936.02

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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.