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Finding the Fourth Proportional to 16,862.22, 25,299.90 and 6,999

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Solution

The fourth proportional to 16,862.22, 25,299.90 and 6,999 is: 10,501.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,862.22 : 25,299.90 = 6,999 : x
  2. Step 2: Convert to fraction form
    16,862.22/25,299.90 = 6,999/x
  3. Step 3: Cross multiply
    16,862.22x = 25,299.90 × 6,999
  4. Step 4: Simplify right side
    16,862.22x = 177,074,000.10
  5. Step 5: Solve for x
    x = 177,074,000.10/16,862.22
  6. Step 6: Final answer
    x = 10,501.23

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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.