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Finding the Fourth Proportional to 14,625.99, 20,183.92 and 7,911.68

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Solution

The fourth proportional to 14,625.99, 20,183.92 and 7,911.68 is: 10,918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,625.99 : 20,183.92 = 7,911.68 : x
  2. Step 2: Convert to fraction form
    14,625.99/20,183.92 = 7,911.68/x
  3. Step 3: Cross multiply
    14,625.99x = 20,183.92 × 7,911.68
  4. Step 4: Simplify right side
    14,625.99x = 159,688,716.19
  5. Step 5: Solve for x
    x = 159,688,716.19/14,625.99
  6. Step 6: Final answer
    x = 10,918.15

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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.