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Finding the Fourth Proportional to 28,950.75, 39,957.57 and 16,375.50

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Solution

The fourth proportional to 28,950.75, 39,957.57 and 16,375.50 is: 22,601.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,950.75 : 39,957.57 = 16,375.50 : x
  2. Step 2: Convert to fraction form
    28,950.75/39,957.57 = 16,375.50/x
  3. Step 3: Cross multiply
    28,950.75x = 39,957.57 × 16,375.50
  4. Step 4: Simplify right side
    28,950.75x = 654,325,187.54
  5. Step 5: Solve for x
    x = 654,325,187.54/28,950.75
  6. Step 6: Final answer
    x = 22,601.32

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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.