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Finding the Fourth Proportional to 14,649.43, 20,217.99 and 8,276.29

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Solution

The fourth proportional to 14,649.43, 20,217.99 and 8,276.29 is: 11,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.43 : 20,217.99 = 8,276.29 : x
  2. Step 2: Convert to fraction form
    14,649.43/20,217.99 = 8,276.29/x
  3. Step 3: Cross multiply
    14,649.43x = 20,217.99 × 8,276.29
  4. Step 4: Simplify right side
    14,649.43x = 167,329,948.46
  5. Step 5: Solve for x
    x = 167,329,948.46/14,649.43
  6. Step 6: Final answer
    x = 11,422.28

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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.