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Finding the Fourth Proportional to 14,849, 22,273.50 and 3,905

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Solution

The fourth proportional to 14,849, 22,273.50 and 3,905 is: 5,857.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,849 : 22,273.50 = 3,905 : x
  2. Step 2: Convert to fraction form
    14,849/22,273.50 = 3,905/x
  3. Step 3: Cross multiply
    14,849x = 22,273.50 × 3,905
  4. Step 4: Simplify right side
    14,849x = 86,978,017.50
  5. Step 5: Solve for x
    x = 86,978,017.50/14,849
  6. Step 6: Final answer
    x = 5,857.50

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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.