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Finding the Fourth Proportional to 17,690.31, 26,539.79 and 7,305.03

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Solution

The fourth proportional to 17,690.31, 26,539.79 and 7,305.03 is: 10,959.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,690.31 : 26,539.79 = 7,305.03 : x
  2. Step 2: Convert to fraction form
    17,690.31/26,539.79 = 7,305.03/x
  3. Step 3: Cross multiply
    17,690.31x = 26,539.79 × 7,305.03
  4. Step 4: Simplify right side
    17,690.31x = 193,873,925.62
  5. Step 5: Solve for x
    x = 193,873,925.62/17,690.31
  6. Step 6: Final answer
    x = 10,959.33

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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.