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Finding the Fourth Proportional to 14,638.78, 21,958.78 and 4,250.53

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Solution

The fourth proportional to 14,638.78, 21,958.78 and 4,250.53 is: 6,375.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,638.78 : 21,958.78 = 4,250.53 : x
  2. Step 2: Convert to fraction form
    14,638.78/21,958.78 = 4,250.53/x
  3. Step 3: Cross multiply
    14,638.78x = 21,958.78 × 4,250.53
  4. Step 4: Simplify right side
    14,638.78x = 93,336,477.95
  5. Step 5: Solve for x
    x = 93,336,477.95/14,638.78
  6. Step 6: Final answer
    x = 6,375.97

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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.