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Finding the Fourth Proportional to 14,355.76, 21,531.21 and 3,967.54

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Solution

The fourth proportional to 14,355.76, 21,531.21 and 3,967.54 is: 5,950.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,355.76 : 21,531.21 = 3,967.54 : x
  2. Step 2: Convert to fraction form
    14,355.76/21,531.21 = 3,967.54/x
  3. Step 3: Cross multiply
    14,355.76x = 21,531.21 × 3,967.54
  4. Step 4: Simplify right side
    14,355.76x = 85,425,936.92
  5. Step 5: Solve for x
    x = 85,425,936.92/14,355.76
  6. Step 6: Final answer
    x = 5,950.64

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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.