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Finding the Fourth Proportional to 18,492.39, 27,735.03 and 7,964.22

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Solution

The fourth proportional to 18,492.39, 27,735.03 and 7,964.22 is: 11,944.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.39 : 27,735.03 = 7,964.22 : x
  2. Step 2: Convert to fraction form
    18,492.39/27,735.03 = 7,964.22/x
  3. Step 3: Cross multiply
    18,492.39x = 27,735.03 × 7,964.22
  4. Step 4: Simplify right side
    18,492.39x = 220,887,880.63
  5. Step 5: Solve for x
    x = 220,887,880.63/18,492.39
  6. Step 6: Final answer
    x = 11,944.80

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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.