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Finding the Fourth Proportional to 28,874.84, 39,856.88 and 16,933.82

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Solution

The fourth proportional to 28,874.84, 39,856.88 and 16,933.82 is: 23,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,874.84 : 39,856.88 = 16,933.82 : x
  2. Step 2: Convert to fraction form
    28,874.84/39,856.88 = 16,933.82/x
  3. Step 3: Cross multiply
    28,874.84x = 39,856.88 × 16,933.82
  4. Step 4: Simplify right side
    28,874.84x = 674,929,147.01
  5. Step 5: Solve for x
    x = 674,929,147.01/28,874.84
  6. Step 6: Final answer
    x = 23,374.30

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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.