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Finding the Fourth Proportional to 28,100.48, 38,766.48 and 16,916

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Solution

The fourth proportional to 28,100.48, 38,766.48 and 16,916 is: 23,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.48 : 38,766.48 = 16,916 : x
  2. Step 2: Convert to fraction form
    28,100.48/38,766.48 = 16,916/x
  3. Step 3: Cross multiply
    28,100.48x = 38,766.48 × 16,916
  4. Step 4: Simplify right side
    28,100.48x = 655,773,775.68
  5. Step 5: Solve for x
    x = 655,773,775.68/28,100.48
  6. Step 6: Final answer
    x = 23,336.75

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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.