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Finding the Fourth Proportional to 17,011.72, 25,521.77 and 5,918.51

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Solution

The fourth proportional to 17,011.72, 25,521.77 and 5,918.51 is: 8,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,011.72 : 25,521.77 = 5,918.51 : x
  2. Step 2: Convert to fraction form
    17,011.72/25,521.77 = 5,918.51/x
  3. Step 3: Cross multiply
    17,011.72x = 25,521.77 × 5,918.51
  4. Step 4: Simplify right side
    17,011.72x = 151,050,708.56
  5. Step 5: Solve for x
    x = 151,050,708.56/17,011.72
  6. Step 6: Final answer
    x = 8,879.21

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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.