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Finding the Fourth Proportional to 28,888.25, 39,866.05 and 16,951.78

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Solution

The fourth proportional to 28,888.25, 39,866.05 and 16,951.78 is: 23,393.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.25 : 39,866.05 = 16,951.78 : x
  2. Step 2: Convert to fraction form
    28,888.25/39,866.05 = 16,951.78/x
  3. Step 3: Cross multiply
    28,888.25x = 39,866.05 × 16,951.78
  4. Step 4: Simplify right side
    28,888.25x = 675,800,509.07
  5. Step 5: Solve for x
    x = 675,800,509.07/28,888.25
  6. Step 6: Final answer
    x = 23,393.61

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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.