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Finding the Fourth Proportional to 28,661.63, 39,553.04 and 16,086.38

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Solution

The fourth proportional to 28,661.63, 39,553.04 and 16,086.38 is: 22,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.63 : 39,553.04 = 16,086.38 : x
  2. Step 2: Convert to fraction form
    28,661.63/39,553.04 = 16,086.38/x
  3. Step 3: Cross multiply
    28,661.63x = 39,553.04 × 16,086.38
  4. Step 4: Simplify right side
    28,661.63x = 636,265,074.05
  5. Step 5: Solve for x
    x = 636,265,074.05/28,661.63
  6. Step 6: Final answer
    x = 22,199.20

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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.