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Finding the Fourth Proportional to 18,710.96, 25,821.11 and 10,327.46

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Solution

The fourth proportional to 18,710.96, 25,821.11 and 10,327.46 is: 14,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.96 : 25,821.11 = 10,327.46 : x
  2. Step 2: Convert to fraction form
    18,710.96/25,821.11 = 10,327.46/x
  3. Step 3: Cross multiply
    18,710.96x = 25,821.11 × 10,327.46
  4. Step 4: Simplify right side
    18,710.96x = 266,666,429.04
  5. Step 5: Solve for x
    x = 266,666,429.04/18,710.96
  6. Step 6: Final answer
    x = 14,251.88

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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.