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Finding the Fourth Proportional to 18,547.42, 27,812.67 and 8,012.47

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Solution

The fourth proportional to 18,547.42, 27,812.67 and 8,012.47 is: 12,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,547.42 : 27,812.67 = 8,012.47 : x
  2. Step 2: Convert to fraction form
    18,547.42/27,812.67 = 8,012.47/x
  3. Step 3: Cross multiply
    18,547.42x = 27,812.67 × 8,012.47
  4. Step 4: Simplify right side
    18,547.42x = 222,848,183.99
  5. Step 5: Solve for x
    x = 222,848,183.99/18,547.42
  6. Step 6: Final answer
    x = 12,015.05

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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.