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Finding the Fourth Proportional to 18,353.48, 27,530.22 and 7,965

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Solution

The fourth proportional to 18,353.48, 27,530.22 and 7,965 is: 11,947.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.48 : 27,530.22 = 7,965 : x
  2. Step 2: Convert to fraction form
    18,353.48/27,530.22 = 7,965/x
  3. Step 3: Cross multiply
    18,353.48x = 27,530.22 × 7,965
  4. Step 4: Simplify right side
    18,353.48x = 219,278,202.30
  5. Step 5: Solve for x
    x = 219,278,202.30/18,353.48
  6. Step 6: Final answer
    x = 11,947.50

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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.