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Finding the Fourth Proportional to 17,398.94, 26,101.65 and 7,911.93

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Solution

The fourth proportional to 17,398.94, 26,101.65 and 7,911.93 is: 11,869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,398.94 : 26,101.65 = 7,911.93 : x
  2. Step 2: Convert to fraction form
    17,398.94/26,101.65 = 7,911.93/x
  3. Step 3: Cross multiply
    17,398.94x = 26,101.65 × 7,911.93
  4. Step 4: Simplify right side
    17,398.94x = 206,514,427.68
  5. Step 5: Solve for x
    x = 206,514,427.68/17,398.94
  6. Step 6: Final answer
    x = 11,869.37

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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.