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Finding the Fourth Proportional to 17,806.20, 26,674.10 and 15,617.40

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Solution

The fourth proportional to 17,806.20, 26,674.10 and 15,617.40 is: 23,395.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,806.20 : 26,674.10 = 15,617.40 : x
  2. Step 2: Convert to fraction form
    17,806.20/26,674.10 = 15,617.40/x
  3. Step 3: Cross multiply
    17,806.20x = 26,674.10 × 15,617.40
  4. Step 4: Simplify right side
    17,806.20x = 416,580,089.34
  5. Step 5: Solve for x
    x = 416,580,089.34/17,806.20
  6. Step 6: Final answer
    x = 23,395.23

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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.