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Finding the Fourth Proportional to 28,886.92, 39,864.22 and 16,950.46

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Solution

The fourth proportional to 28,886.92, 39,864.22 and 16,950.46 is: 23,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,886.92 : 39,864.22 = 16,950.46 : x
  2. Step 2: Convert to fraction form
    28,886.92/39,864.22 = 16,950.46/x
  3. Step 3: Cross multiply
    28,886.92x = 39,864.22 × 16,950.46
  4. Step 4: Simplify right side
    28,886.92x = 675,716,866.54
  5. Step 5: Solve for x
    x = 675,716,866.54/28,886.92
  6. Step 6: Final answer
    x = 23,391.79

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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.