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Finding the Fourth Proportional to 14,687.92, 20,269.36 and 7,973.56

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Solution

The fourth proportional to 14,687.92, 20,269.36 and 7,973.56 is: 11,003.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.92 : 20,269.36 = 7,973.56 : x
  2. Step 2: Convert to fraction form
    14,687.92/20,269.36 = 7,973.56/x
  3. Step 3: Cross multiply
    14,687.92x = 20,269.36 × 7,973.56
  4. Step 4: Simplify right side
    14,687.92x = 161,618,958.12
  5. Step 5: Solve for x
    x = 161,618,958.12/14,687.92
  6. Step 6: Final answer
    x = 11,003.53

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1.5x scale

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.