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Finding the Fourth Proportional to 18,575.31, 27,862.65 and 7,481.73

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Solution

The fourth proportional to 18,575.31, 27,862.65 and 7,481.73 is: 11,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.31 : 27,862.65 = 7,481.73 : x
  2. Step 2: Convert to fraction form
    18,575.31/27,862.65 = 7,481.73/x
  3. Step 3: Cross multiply
    18,575.31x = 27,862.65 × 7,481.73
  4. Step 4: Simplify right side
    18,575.31x = 208,460,824.38
  5. Step 5: Solve for x
    x = 208,460,824.38/18,575.31
  6. Step 6: Final answer
    x = 11,222.47

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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.