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Finding the Fourth Proportional to 17,909.96, 26,828.02 and 10,491.93

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Solution

The fourth proportional to 17,909.96, 26,828.02 and 10,491.93 is: 15,716.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,909.96 : 26,828.02 = 10,491.93 : x
  2. Step 2: Convert to fraction form
    17,909.96/26,828.02 = 10,491.93/x
  3. Step 3: Cross multiply
    17,909.96x = 26,828.02 × 10,491.93
  4. Step 4: Simplify right side
    17,909.96x = 281,477,707.88
  5. Step 5: Solve for x
    x = 281,477,707.88/17,909.96
  6. Step 6: Final answer
    x = 15,716.27

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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.