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Finding the Fourth Proportional to 28,372.44, 42,564.82 and 8,650.48

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Solution

The fourth proportional to 28,372.44, 42,564.82 and 8,650.48 is: 12,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372.44 : 42,564.82 = 8,650.48 : x
  2. Step 2: Convert to fraction form
    28,372.44/42,564.82 = 8,650.48/x
  3. Step 3: Cross multiply
    28,372.44x = 42,564.82 × 8,650.48
  4. Step 4: Simplify right side
    28,372.44x = 368,206,124.11
  5. Step 5: Solve for x
    x = 368,206,124.11/28,372.44
  6. Step 6: Final answer
    x = 12,977.60

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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.