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Finding the Fourth Proportional to 17,887.82, 26,826.53 and 7,214.18

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Solution

The fourth proportional to 17,887.82, 26,826.53 and 7,214.18 is: 10,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,887.82 : 26,826.53 = 7,214.18 : x
  2. Step 2: Convert to fraction form
    17,887.82/26,826.53 = 7,214.18/x
  3. Step 3: Cross multiply
    17,887.82x = 26,826.53 × 7,214.18
  4. Step 4: Simplify right side
    17,887.82x = 193,531,245.99
  5. Step 5: Solve for x
    x = 193,531,245.99/17,887.82
  6. Step 6: Final answer
    x = 10,819.17

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1.5x scale

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.