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Finding the Fourth Proportional to 17,765.29, 26,649.09 and 5,918.56

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Solution

The fourth proportional to 17,765.29, 26,649.09 and 5,918.56 is: 8,878.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,765.29 : 26,649.09 = 5,918.56 : x
  2. Step 2: Convert to fraction form
    17,765.29/26,649.09 = 5,918.56/x
  3. Step 3: Cross multiply
    17,765.29x = 26,649.09 × 5,918.56
  4. Step 4: Simplify right side
    17,765.29x = 157,724,238.11
  5. Step 5: Solve for x
    x = 157,724,238.11/17,765.29
  6. Step 6: Final answer
    x = 8,878.22

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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.