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Finding the Fourth Proportional to 14,973.66, 22,431.72 and 8,379.90

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Solution

The fourth proportional to 14,973.66, 22,431.72 and 8,379.90 is: 12,553.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,973.66 : 22,431.72 = 8,379.90 : x
  2. Step 2: Convert to fraction form
    14,973.66/22,431.72 = 8,379.90/x
  3. Step 3: Cross multiply
    14,973.66x = 22,431.72 × 8,379.90
  4. Step 4: Simplify right side
    14,973.66x = 187,975,570.43
  5. Step 5: Solve for x
    x = 187,975,570.43/14,973.66
  6. Step 6: Final answer
    x = 12,553.75

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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.