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Finding the Fourth Proportional to 17,911.16, 26,811.32 and 15,253.96

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Solution

The fourth proportional to 17,911.16, 26,811.32 and 15,253.96 is: 22,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.16 : 26,811.32 = 15,253.96 : x
  2. Step 2: Convert to fraction form
    17,911.16/26,811.32 = 15,253.96/x
  3. Step 3: Cross multiply
    17,911.16x = 26,811.32 × 15,253.96
  4. Step 4: Simplify right side
    17,911.16x = 408,978,802.83
  5. Step 5: Solve for x
    x = 408,978,802.83/17,911.16
  6. Step 6: Final answer
    x = 22,833.74

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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.