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Finding the Fourth Proportional to 28,620.16, 39,494.08 and 16,044.64

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Solution

The fourth proportional to 28,620.16, 39,494.08 and 16,044.64 is: 22,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.16 : 39,494.08 = 16,044.64 : x
  2. Step 2: Convert to fraction form
    28,620.16/39,494.08 = 16,044.64/x
  3. Step 3: Cross multiply
    28,620.16x = 39,494.08 × 16,044.64
  4. Step 4: Simplify right side
    28,620.16x = 633,668,295.73
  5. Step 5: Solve for x
    x = 633,668,295.73/28,620.16
  6. Step 6: Final answer
    x = 22,140.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.