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Finding the Fourth Proportional to 18,754.13, 25,868.51 and 12,029.11

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Solution

The fourth proportional to 18,754.13, 25,868.51 and 12,029.11 is: 16,592.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.13 : 25,868.51 = 12,029.11 : x
  2. Step 2: Convert to fraction form
    18,754.13/25,868.51 = 12,029.11/x
  3. Step 3: Cross multiply
    18,754.13x = 25,868.51 × 12,029.11
  4. Step 4: Simplify right side
    18,754.13x = 311,175,072.62
  5. Step 5: Solve for x
    x = 311,175,072.62/18,754.13
  6. Step 6: Final answer
    x = 16,592.35

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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.