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Finding the Fourth Proportional to 12,436.88, 18,655.38 and 3,202.88

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Solution

The fourth proportional to 12,436.88, 18,655.38 and 3,202.88 is: 4,804.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.88 : 18,655.38 = 3,202.88 : x
  2. Step 2: Convert to fraction form
    12,436.88/18,655.38 = 3,202.88/x
  3. Step 3: Cross multiply
    12,436.88x = 18,655.38 × 3,202.88
  4. Step 4: Simplify right side
    12,436.88x = 59,750,850.22
  5. Step 5: Solve for x
    x = 59,750,850.22/12,436.88
  6. Step 6: Final answer
    x = 4,804.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.