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Finding the Fourth Proportional to 18,600.84, 25,665.66 and 11,529

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Solution

The fourth proportional to 18,600.84, 25,665.66 and 11,529 is: 15,907.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,600.84 : 25,665.66 = 11,529 : x
  2. Step 2: Convert to fraction form
    18,600.84/25,665.66 = 11,529/x
  3. Step 3: Cross multiply
    18,600.84x = 25,665.66 × 11,529
  4. Step 4: Simplify right side
    18,600.84x = 295,899,394.14
  5. Step 5: Solve for x
    x = 295,899,394.14/18,600.84
  6. Step 6: Final answer
    x = 15,907.85

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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.