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Finding the Fourth Proportional to 18,536.99, 27,809.12 and 6,850.31

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Solution

The fourth proportional to 18,536.99, 27,809.12 and 6,850.31 is: 10,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,536.99 : 27,809.12 = 6,850.31 : x
  2. Step 2: Convert to fraction form
    18,536.99/27,809.12 = 6,850.31/x
  3. Step 3: Cross multiply
    18,536.99x = 27,809.12 × 6,850.31
  4. Step 4: Simplify right side
    18,536.99x = 190,500,970.91
  5. Step 5: Solve for x
    x = 190,500,970.91/18,536.99
  6. Step 6: Final answer
    x = 10,276.80

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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.