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Finding the Fourth Proportional to 12,548.68, 18,829.20 and 8,874.52

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Solution

The fourth proportional to 12,548.68, 18,829.20 and 8,874.52 is: 13,316.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,548.68 : 18,829.20 = 8,874.52 : x
  2. Step 2: Convert to fraction form
    12,548.68/18,829.20 = 8,874.52/x
  3. Step 3: Cross multiply
    12,548.68x = 18,829.20 × 8,874.52
  4. Step 4: Simplify right side
    12,548.68x = 167,100,111.98
  5. Step 5: Solve for x
    x = 167,100,111.98/12,548.68
  6. Step 6: Final answer
    x = 13,316.15

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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.