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Finding the Fourth Proportional to 11,308.80, 16,948.80 and 5,452.80

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Solution

The fourth proportional to 11,308.80, 16,948.80 and 5,452.80 is: 8,172.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,308.80 : 16,948.80 = 5,452.80 : x
  2. Step 2: Convert to fraction form
    11,308.80/16,948.80 = 5,452.80/x
  3. Step 3: Cross multiply
    11,308.80x = 16,948.80 × 5,452.80
  4. Step 4: Simplify right side
    11,308.80x = 92,418,416.64
  5. Step 5: Solve for x
    x = 92,418,416.64/11,308.80
  6. Step 6: Final answer
    x = 8,172.26

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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.