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Finding the Fourth Proportional to 18,802.64, 25,940.77 and 11,249.19

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Solution

The fourth proportional to 18,802.64, 25,940.77 and 11,249.19 is: 15,519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.64 : 25,940.77 = 11,249.19 : x
  2. Step 2: Convert to fraction form
    18,802.64/25,940.77 = 11,249.19/x
  3. Step 3: Cross multiply
    18,802.64x = 25,940.77 × 11,249.19
  4. Step 4: Simplify right side
    18,802.64x = 291,812,650.48
  5. Step 5: Solve for x
    x = 291,812,650.48/18,802.64
  6. Step 6: Final answer
    x = 15,519.77

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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.