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Finding the Fourth Proportional to 13,633.52, 18,809.88 and 8,043.44

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Solution

The fourth proportional to 13,633.52, 18,809.88 and 8,043.44 is: 11,097.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.52 : 18,809.88 = 8,043.44 : x
  2. Step 2: Convert to fraction form
    13,633.52/18,809.88 = 8,043.44/x
  3. Step 3: Cross multiply
    13,633.52x = 18,809.88 × 8,043.44
  4. Step 4: Simplify right side
    13,633.52x = 151,296,141.19
  5. Step 5: Solve for x
    x = 151,296,141.19/13,633.52
  6. Step 6: Final answer
    x = 11,097.36

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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.