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Finding the Fourth Proportional to 14,635.80, 21,921.30 and 12,043.80

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Solution

The fourth proportional to 14,635.80, 21,921.30 and 12,043.80 is: 18,039.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,635.80 : 21,921.30 = 12,043.80 : x
  2. Step 2: Convert to fraction form
    14,635.80/21,921.30 = 12,043.80/x
  3. Step 3: Cross multiply
    14,635.80x = 21,921.30 × 12,043.80
  4. Step 4: Simplify right side
    14,635.80x = 264,015,752.94
  5. Step 5: Solve for x
    x = 264,015,752.94/14,635.80
  6. Step 6: Final answer
    x = 18,039.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.