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Finding the Fourth Proportional to 28,793.87, 39,736.76 and 16,047.07

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Solution

The fourth proportional to 28,793.87, 39,736.76 and 16,047.07 is: 22,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.87 : 39,736.76 = 16,047.07 : x
  2. Step 2: Convert to fraction form
    28,793.87/39,736.76 = 16,047.07/x
  3. Step 3: Cross multiply
    28,793.87x = 39,736.76 × 16,047.07
  4. Step 4: Simplify right side
    28,793.87x = 637,658,569.29
  5. Step 5: Solve for x
    x = 637,658,569.29/28,793.87
  6. Step 6: Final answer
    x = 22,145.64

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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.