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Finding the Fourth Proportional to 28,793.90, 39,734.52 and 16,216.22

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Solution

The fourth proportional to 28,793.90, 39,734.52 and 16,216.22 is: 22,377.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.90 : 39,734.52 = 16,216.22 : x
  2. Step 2: Convert to fraction form
    28,793.90/39,734.52 = 16,216.22/x
  3. Step 3: Cross multiply
    28,793.90x = 39,734.52 × 16,216.22
  4. Step 4: Simplify right side
    28,793.90x = 644,343,717.91
  5. Step 5: Solve for x
    x = 644,343,717.91/28,793.90
  6. Step 6: Final answer
    x = 22,377.79

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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.