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Finding the Fourth Proportional to 30,236.80, 41,723.76 and 17,489.02

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Solution

The fourth proportional to 30,236.80, 41,723.76 and 17,489.02 is: 24,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,236.80 : 41,723.76 = 17,489.02 : x
  2. Step 2: Convert to fraction form
    30,236.80/41,723.76 = 17,489.02/x
  3. Step 3: Cross multiply
    30,236.80x = 41,723.76 × 17,489.02
  4. Step 4: Simplify right side
    30,236.80x = 729,707,673.12
  5. Step 5: Solve for x
    x = 729,707,673.12/30,236.80
  6. Step 6: Final answer
    x = 24,133.10

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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.