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Finding the Fourth Proportional to 19,401.68, 26,774.16 and 11,018

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Solution

The fourth proportional to 19,401.68, 26,774.16 and 11,018 is: 15,204.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,401.68 : 26,774.16 = 11,018 : x
  2. Step 2: Convert to fraction form
    19,401.68/26,774.16 = 11,018/x
  3. Step 3: Cross multiply
    19,401.68x = 26,774.16 × 11,018
  4. Step 4: Simplify right side
    19,401.68x = 294,997,694.88
  5. Step 5: Solve for x
    x = 294,997,694.88/19,401.68
  6. Step 6: Final answer
    x = 15,204.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.