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Finding the Fourth Proportional to 28,894.82, 39,880.11 and 16,796.96

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Solution

The fourth proportional to 28,894.82, 39,880.11 and 16,796.96 is: 23,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,894.82 : 39,880.11 = 16,796.96 : x
  2. Step 2: Convert to fraction form
    28,894.82/39,880.11 = 16,796.96/x
  3. Step 3: Cross multiply
    28,894.82x = 39,880.11 × 16,796.96
  4. Step 4: Simplify right side
    28,894.82x = 669,864,612.47
  5. Step 5: Solve for x
    x = 669,864,612.47/28,894.82
  6. Step 6: Final answer
    x = 23,182.86

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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.