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Finding the Fourth Proportional to 17,990.46, 26,973.99 and 7,457.61

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Solution

The fourth proportional to 17,990.46, 26,973.99 and 7,457.61 is: 11,181.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.46 : 26,973.99 = 7,457.61 : x
  2. Step 2: Convert to fraction form
    17,990.46/26,973.99 = 7,457.61/x
  3. Step 3: Cross multiply
    17,990.46x = 26,973.99 × 7,457.61
  4. Step 4: Simplify right side
    17,990.46x = 201,161,497.56
  5. Step 5: Solve for x
    x = 201,161,497.56/17,990.46
  6. Step 6: Final answer
    x = 11,181.56

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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.