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Finding the Fourth Proportional to 18,682.61, 27,994.70 and 11,742.53

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Solution

The fourth proportional to 18,682.61, 27,994.70 and 11,742.53 is: 17,595.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.61 : 27,994.70 = 11,742.53 : x
  2. Step 2: Convert to fraction form
    18,682.61/27,994.70 = 11,742.53/x
  3. Step 3: Cross multiply
    18,682.61x = 27,994.70 × 11,742.53
  4. Step 4: Simplify right side
    18,682.61x = 328,728,405.90
  5. Step 5: Solve for x
    x = 328,728,405.90/18,682.61
  6. Step 6: Final answer
    x = 17,595.43

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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.