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Finding the Fourth Proportional to 13,897.44, 19,181.44 and 8,860.50

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Solution

The fourth proportional to 13,897.44, 19,181.44 and 8,860.50 is: 12,229.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.44 : 19,181.44 = 8,860.50 : x
  2. Step 2: Convert to fraction form
    13,897.44/19,181.44 = 8,860.50/x
  3. Step 3: Cross multiply
    13,897.44x = 19,181.44 × 8,860.50
  4. Step 4: Simplify right side
    13,897.44x = 169,957,149.12
  5. Step 5: Solve for x
    x = 169,957,149.12/13,897.44
  6. Step 6: Final answer
    x = 12,229.39

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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.