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Finding the Fourth Proportional to 15,076.84, 20,806.02 and 8,363.49

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Solution

The fourth proportional to 15,076.84, 20,806.02 and 8,363.49 is: 11,541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.84 : 20,806.02 = 8,363.49 : x
  2. Step 2: Convert to fraction form
    15,076.84/20,806.02 = 8,363.49/x
  3. Step 3: Cross multiply
    15,076.84x = 20,806.02 × 8,363.49
  4. Step 4: Simplify right side
    15,076.84x = 174,010,940.21
  5. Step 5: Solve for x
    x = 174,010,940.21/15,076.84
  6. Step 6: Final answer
    x = 11,541.61

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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.