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Finding the Fourth Proportional to 18,417.20, 27,568.20 and 13,233.20

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Solution

The fourth proportional to 18,417.20, 27,568.20 and 13,233.20 is: 19,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,417.20 : 27,568.20 = 13,233.20 : x
  2. Step 2: Convert to fraction form
    18,417.20/27,568.20 = 13,233.20/x
  3. Step 3: Cross multiply
    18,417.20x = 27,568.20 × 13,233.20
  4. Step 4: Simplify right side
    18,417.20x = 364,815,504.24
  5. Step 5: Solve for x
    x = 364,815,504.24/18,417.20
  6. Step 6: Final answer
    x = 19,808.41

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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.