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Finding the Fourth Proportional to 14,687.75, 20,269.11 and 7,973.37

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Solution

The fourth proportional to 14,687.75, 20,269.11 and 7,973.37 is: 11,003.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.75 : 20,269.11 = 7,973.37 : x
  2. Step 2: Convert to fraction form
    14,687.75/20,269.11 = 7,973.37/x
  3. Step 3: Cross multiply
    14,687.75x = 20,269.11 × 7,973.37
  4. Step 4: Simplify right side
    14,687.75x = 161,613,113.60
  5. Step 5: Solve for x
    x = 161,613,113.60/14,687.75
  6. Step 6: Final answer
    x = 11,003.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.