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Finding the Fourth Proportional to 18,991.50, 26,208.27 and 10,608

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Solution

The fourth proportional to 18,991.50, 26,208.27 and 10,608 is: 14,639.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.50 : 26,208.27 = 10,608 : x
  2. Step 2: Convert to fraction form
    18,991.50/26,208.27 = 10,608/x
  3. Step 3: Cross multiply
    18,991.50x = 26,208.27 × 10,608
  4. Step 4: Simplify right side
    18,991.50x = 278,017,328.16
  5. Step 5: Solve for x
    x = 278,017,328.16/18,991.50
  6. Step 6: Final answer
    x = 14,639.04

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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.