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Finding the Fourth Proportional to 28,793.86, 39,734.92 and 16,047.02

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Solution

The fourth proportional to 28,793.86, 39,734.92 and 16,047.02 is: 22,144.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.86 : 39,734.92 = 16,047.02 : x
  2. Step 2: Convert to fraction form
    28,793.86/39,734.92 = 16,047.02/x
  3. Step 3: Cross multiply
    28,793.86x = 39,734.92 × 16,047.02
  4. Step 4: Simplify right side
    28,793.86x = 637,627,055.94
  5. Step 5: Solve for x
    x = 637,627,055.94/28,793.86
  6. Step 6: Final answer
    x = 22,144.55

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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.