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Finding the Fourth Proportional to 15,874.92, 21,928.86 and 11,850.84

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Solution

The fourth proportional to 15,874.92, 21,928.86 and 11,850.84 is: 16,370.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,874.92 : 21,928.86 = 11,850.84 : x
  2. Step 2: Convert to fraction form
    15,874.92/21,928.86 = 11,850.84/x
  3. Step 3: Cross multiply
    15,874.92x = 21,928.86 × 11,850.84
  4. Step 4: Simplify right side
    15,874.92x = 259,875,411.24
  5. Step 5: Solve for x
    x = 259,875,411.24/15,874.92
  6. Step 6: Final answer
    x = 16,370.19

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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.