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Finding the Fourth Proportional to 21,821.01, 32,743.26 and 8,673.51

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Solution

The fourth proportional to 21,821.01, 32,743.26 and 8,673.51 is: 13,014.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,821.01 : 32,743.26 = 8,673.51 : x
  2. Step 2: Convert to fraction form
    21,821.01/32,743.26 = 8,673.51/x
  3. Step 3: Cross multiply
    21,821.01x = 32,743.26 × 8,673.51
  4. Step 4: Simplify right side
    21,821.01x = 283,998,993.04
  5. Step 5: Solve for x
    x = 283,998,993.04/21,821.01
  6. Step 6: Final answer
    x = 13,014.93

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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.