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Finding the Fourth Proportional to 18,609.68, 27,918.64 and 6,133.56

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Solution

The fourth proportional to 18,609.68, 27,918.64 and 6,133.56 is: 9,201.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.68 : 27,918.64 = 6,133.56 : x
  2. Step 2: Convert to fraction form
    18,609.68/27,918.64 = 6,133.56/x
  3. Step 3: Cross multiply
    18,609.68x = 27,918.64 × 6,133.56
  4. Step 4: Simplify right side
    18,609.68x = 171,240,653.56
  5. Step 5: Solve for x
    x = 171,240,653.56/18,609.68
  6. Step 6: Final answer
    x = 9,201.70

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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.