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Finding the Fourth Proportional to 21,581.01, 29,791.01 and 14,511.54

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Solution

The fourth proportional to 21,581.01, 29,791.01 and 14,511.54 is: 20,032.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.01 : 29,791.01 = 14,511.54 : x
  2. Step 2: Convert to fraction form
    21,581.01/29,791.01 = 14,511.54/x
  3. Step 3: Cross multiply
    21,581.01x = 29,791.01 × 14,511.54
  4. Step 4: Simplify right side
    21,581.01x = 432,313,433.26
  5. Step 5: Solve for x
    x = 432,313,433.26/21,581.01
  6. Step 6: Final answer
    x = 20,032.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.