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Finding the Fourth Proportional to 18,168.84, 25,078.41 and 11,366.46

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Solution

The fourth proportional to 18,168.84, 25,078.41 and 11,366.46 is: 15,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.84 : 25,078.41 = 11,366.46 : x
  2. Step 2: Convert to fraction form
    18,168.84/25,078.41 = 11,366.46/x
  3. Step 3: Cross multiply
    18,168.84x = 25,078.41 × 11,366.46
  4. Step 4: Simplify right side
    18,168.84x = 285,052,744.13
  5. Step 5: Solve for x
    x = 285,052,744.13/18,168.84
  6. Step 6: Final answer
    x = 15,689.10

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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.