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Finding the Fourth Proportional to 14,608.36, 21,915.97 and 4,747.64

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Solution

The fourth proportional to 14,608.36, 21,915.97 and 4,747.64 is: 7,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,608.36 : 21,915.97 = 4,747.64 : x
  2. Step 2: Convert to fraction form
    14,608.36/21,915.97 = 4,747.64/x
  3. Step 3: Cross multiply
    14,608.36x = 21,915.97 × 4,747.64
  4. Step 4: Simplify right side
    14,608.36x = 104,049,135.81
  5. Step 5: Solve for x
    x = 104,049,135.81/14,608.36
  6. Step 6: Final answer
    x = 7,122.57

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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.