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Finding the Fourth Proportional to 18,828.50, 25,962.03 and 12,013.41

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Solution

The fourth proportional to 18,828.50, 25,962.03 and 12,013.41 is: 16,564.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.50 : 25,962.03 = 12,013.41 : x
  2. Step 2: Convert to fraction form
    18,828.50/25,962.03 = 12,013.41/x
  3. Step 3: Cross multiply
    18,828.50x = 25,962.03 × 12,013.41
  4. Step 4: Simplify right side
    18,828.50x = 311,892,510.82
  5. Step 5: Solve for x
    x = 311,892,510.82/18,828.50
  6. Step 6: Final answer
    x = 16,564.92

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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.