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Finding the Fourth Proportional to 17,757.51, 26,642.04 and 11,858.39

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Solution

The fourth proportional to 17,757.51, 26,642.04 and 11,858.39 is: 17,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,757.51 : 26,642.04 = 11,858.39 : x
  2. Step 2: Convert to fraction form
    17,757.51/26,642.04 = 11,858.39/x
  3. Step 3: Cross multiply
    17,757.51x = 26,642.04 × 11,858.39
  4. Step 4: Simplify right side
    17,757.51x = 315,931,567.51
  5. Step 5: Solve for x
    x = 315,931,567.51/17,757.51
  6. Step 6: Final answer
    x = 17,791.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.