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Finding the Fourth Proportional to 19,448.67, 26,828.36 and 12,745.11

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Solution

The fourth proportional to 19,448.67, 26,828.36 and 12,745.11 is: 17,581.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,448.67 : 26,828.36 = 12,745.11 : x
  2. Step 2: Convert to fraction form
    19,448.67/26,828.36 = 12,745.11/x
  3. Step 3: Cross multiply
    19,448.67x = 26,828.36 × 12,745.11
  4. Step 4: Simplify right side
    19,448.67x = 341,930,555.69
  5. Step 5: Solve for x
    x = 341,930,555.69/19,448.67
  6. Step 6: Final answer
    x = 17,581.18

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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.