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Finding the Fourth Proportional to 18,468.64, 27,685.89 and 7,372.63

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Solution

The fourth proportional to 18,468.64, 27,685.89 and 7,372.63 is: 11,052.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468.64 : 27,685.89 = 7,372.63 : x
  2. Step 2: Convert to fraction form
    18,468.64/27,685.89 = 7,372.63/x
  3. Step 3: Cross multiply
    18,468.64x = 27,685.89 × 7,372.63
  4. Step 4: Simplify right side
    18,468.64x = 204,117,823.19
  5. Step 5: Solve for x
    x = 204,117,823.19/18,468.64
  6. Step 6: Final answer
    x = 11,052.13

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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.