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Finding the Fourth Proportional to 18,482.90, 25,479.84 and 13,168.49

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Solution

The fourth proportional to 18,482.90, 25,479.84 and 13,168.49 is: 18,153.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.90 : 25,479.84 = 13,168.49 : x
  2. Step 2: Convert to fraction form
    18,482.90/25,479.84 = 13,168.49/x
  3. Step 3: Cross multiply
    18,482.90x = 25,479.84 × 13,168.49
  4. Step 4: Simplify right side
    18,482.90x = 335,530,940.22
  5. Step 5: Solve for x
    x = 335,530,940.22/18,482.90
  6. Step 6: Final answer
    x = 18,153.59

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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.