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Finding the Fourth Proportional to 18,083.94, 24,943.92 and 13,039.80

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Solution

The fourth proportional to 18,083.94, 24,943.92 and 13,039.80 is: 17,986.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,083.94 : 24,943.92 = 13,039.80 : x
  2. Step 2: Convert to fraction form
    18,083.94/24,943.92 = 13,039.80/x
  3. Step 3: Cross multiply
    18,083.94x = 24,943.92 × 13,039.80
  4. Step 4: Simplify right side
    18,083.94x = 325,263,728.02
  5. Step 5: Solve for x
    x = 325,263,728.02/18,083.94
  6. Step 6: Final answer
    x = 17,986.33

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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.