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Finding the Fourth Proportional to 28,892.92, 39,879.48 and 16,324.96

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Solution

The fourth proportional to 28,892.92, 39,879.48 and 16,324.96 is: 22,532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,892.92 : 39,879.48 = 16,324.96 : x
  2. Step 2: Convert to fraction form
    28,892.92/39,879.48 = 16,324.96/x
  3. Step 3: Cross multiply
    28,892.92x = 39,879.48 × 16,324.96
  4. Step 4: Simplify right side
    28,892.92x = 651,030,915.82
  5. Step 5: Solve for x
    x = 651,030,915.82/28,892.92
  6. Step 6: Final answer
    x = 22,532.54

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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.