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Finding the Fourth Proportional to 17,898.89, 26,840.49 and 7,361.87

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Solution

The fourth proportional to 17,898.89, 26,840.49 and 7,361.87 is: 11,039.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,898.89 : 26,840.49 = 7,361.87 : x
  2. Step 2: Convert to fraction form
    17,898.89/26,840.49 = 7,361.87/x
  3. Step 3: Cross multiply
    17,898.89x = 26,840.49 × 7,361.87
  4. Step 4: Simplify right side
    17,898.89x = 197,596,063.91
  5. Step 5: Solve for x
    x = 197,596,063.91/17,898.89
  6. Step 6: Final answer
    x = 11,039.57

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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.