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Finding the Fourth Proportional to 18,562.68, 27,816.72 and 13,609.14

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Solution

The fourth proportional to 18,562.68, 27,816.72 and 13,609.14 is: 20,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,562.68 : 27,816.72 = 13,609.14 : x
  2. Step 2: Convert to fraction form
    18,562.68/27,816.72 = 13,609.14/x
  3. Step 3: Cross multiply
    18,562.68x = 27,816.72 × 13,609.14
  4. Step 4: Simplify right side
    18,562.68x = 378,561,636.82
  5. Step 5: Solve for x
    x = 378,561,636.82/18,562.68
  6. Step 6: Final answer
    x = 20,393.70

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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.