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Finding the Fourth Proportional to 18,496.95, 27,749.53 and 8,630.84

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Solution

The fourth proportional to 18,496.95, 27,749.53 and 8,630.84 is: 12,948.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,496.95 : 27,749.53 = 8,630.84 : x
  2. Step 2: Convert to fraction form
    18,496.95/27,749.53 = 8,630.84/x
  3. Step 3: Cross multiply
    18,496.95x = 27,749.53 × 8,630.84
  4. Step 4: Simplify right side
    18,496.95x = 239,501,847.11
  5. Step 5: Solve for x
    x = 239,501,847.11/18,496.95
  6. Step 6: Final answer
    x = 12,948.18

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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.