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Finding the Fourth Proportional to 18,871.99, 26,042.11 and 10,372.46

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Solution

The fourth proportional to 18,871.99, 26,042.11 and 10,372.46 is: 14,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.99 : 26,042.11 = 10,372.46 : x
  2. Step 2: Convert to fraction form
    18,871.99/26,042.11 = 10,372.46/x
  3. Step 3: Cross multiply
    18,871.99x = 26,042.11 × 10,372.46
  4. Step 4: Simplify right side
    18,871.99x = 270,120,588.15
  5. Step 5: Solve for x
    x = 270,120,588.15/18,871.99
  6. Step 6: Final answer
    x = 14,313.31

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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.