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Finding the Fourth Proportional to 18,575.44, 27,862.85 and 7,481.84

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Solution

The fourth proportional to 18,575.44, 27,862.85 and 7,481.84 is: 11,222.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.44 : 27,862.85 = 7,481.84 : x
  2. Step 2: Convert to fraction form
    18,575.44/27,862.85 = 7,481.84/x
  3. Step 3: Cross multiply
    18,575.44x = 27,862.85 × 7,481.84
  4. Step 4: Simplify right side
    18,575.44x = 208,465,417.89
  5. Step 5: Solve for x
    x = 208,465,417.89/18,575.44
  6. Step 6: Final answer
    x = 11,222.64

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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.