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Finding the Fourth Proportional to 18,463.96, 25,486.48 and 12,012.30

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Solution

The fourth proportional to 18,463.96, 25,486.48 and 12,012.30 is: 16,581.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,463.96 : 25,486.48 = 12,012.30 : x
  2. Step 2: Convert to fraction form
    18,463.96/25,486.48 = 12,012.30/x
  3. Step 3: Cross multiply
    18,463.96x = 25,486.48 × 12,012.30
  4. Step 4: Simplify right side
    18,463.96x = 306,151,243.70
  5. Step 5: Solve for x
    x = 306,151,243.70/18,463.96
  6. Step 6: Final answer
    x = 16,581.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.