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Finding the Fourth Proportional to 18,595.68, 27,891.48 and 5,448.20

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Solution

The fourth proportional to 18,595.68, 27,891.48 and 5,448.20 is: 8,171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,595.68 : 27,891.48 = 5,448.20 : x
  2. Step 2: Convert to fraction form
    18,595.68/27,891.48 = 5,448.20/x
  3. Step 3: Cross multiply
    18,595.68x = 27,891.48 × 5,448.20
  4. Step 4: Simplify right side
    18,595.68x = 151,958,361.34
  5. Step 5: Solve for x
    x = 151,958,361.34/18,595.68
  6. Step 6: Final answer
    x = 8,171.70

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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.