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Finding the Fourth Proportional to 31,698.67, 43,745.53 and 17,551.51

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Solution

The fourth proportional to 31,698.67, 43,745.53 and 17,551.51 is: 24,221.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,698.67 : 43,745.53 = 17,551.51 : x
  2. Step 2: Convert to fraction form
    31,698.67/43,745.53 = 17,551.51/x
  3. Step 3: Cross multiply
    31,698.67x = 43,745.53 × 17,551.51
  4. Step 4: Simplify right side
    31,698.67x = 767,800,107.25
  5. Step 5: Solve for x
    x = 767,800,107.25/31,698.67
  6. Step 6: Final answer
    x = 24,221.84

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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.