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Finding the Fourth Proportional to 18,612.14, 27,918.27 and 4,572.27

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Solution

The fourth proportional to 18,612.14, 27,918.27 and 4,572.27 is: 6,858.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.14 : 27,918.27 = 4,572.27 : x
  2. Step 2: Convert to fraction form
    18,612.14/27,918.27 = 4,572.27/x
  3. Step 3: Cross multiply
    18,612.14x = 27,918.27 × 4,572.27
  4. Step 4: Simplify right side
    18,612.14x = 127,649,868.37
  5. Step 5: Solve for x
    x = 127,649,868.37/18,612.14
  6. Step 6: Final answer
    x = 6,858.42

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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.