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Finding the Fourth Proportional to 18,457.94, 27,687.31 and 6,612.49

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Solution

The fourth proportional to 18,457.94, 27,687.31 and 6,612.49 is: 9,918.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457.94 : 27,687.31 = 6,612.49 : x
  2. Step 2: Convert to fraction form
    18,457.94/27,687.31 = 6,612.49/x
  3. Step 3: Cross multiply
    18,457.94x = 27,687.31 × 6,612.49
  4. Step 4: Simplify right side
    18,457.94x = 183,081,910.44
  5. Step 5: Solve for x
    x = 183,081,910.44/18,457.94
  6. Step 6: Final answer
    x = 9,918.87

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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.