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Finding the Fourth Proportional to 12,223.10, 16,862.18 and 7,187.23

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Solution

The fourth proportional to 12,223.10, 16,862.18 and 7,187.23 is: 9,915.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.10 : 16,862.18 = 7,187.23 : x
  2. Step 2: Convert to fraction form
    12,223.10/16,862.18 = 7,187.23/x
  3. Step 3: Cross multiply
    12,223.10x = 16,862.18 × 7,187.23
  4. Step 4: Simplify right side
    12,223.10x = 121,192,351.10
  5. Step 5: Solve for x
    x = 121,192,351.10/12,223.10
  6. Step 6: Final answer
    x = 9,915.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.