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Finding the Fourth Proportional to 71,906.01, 107,859.01 and 21,986.11

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Solution

The fourth proportional to 71,906.01, 107,859.01 and 21,986.11 is: 32,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,906.01 : 107,859.01 = 21,986.11 : x
  2. Step 2: Convert to fraction form
    71,906.01/107,859.01 = 21,986.11/x
  3. Step 3: Cross multiply
    71,906.01x = 107,859.01 × 21,986.11
  4. Step 4: Simplify right side
    71,906.01x = 2,371,399,519.06
  5. Step 5: Solve for x
    x = 2,371,399,519.06/71,906.01
  6. Step 6: Final answer
    x = 32,979.16

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Similar ratio
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1.5x scale

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.