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Finding the Fourth Proportional to 18,605.08, 25,675.41 and 11,439.10

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Solution

The fourth proportional to 18,605.08, 25,675.41 and 11,439.10 is: 15,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.08 : 25,675.41 = 11,439.10 : x
  2. Step 2: Convert to fraction form
    18,605.08/25,675.41 = 11,439.10/x
  3. Step 3: Cross multiply
    18,605.08x = 25,675.41 × 11,439.10
  4. Step 4: Simplify right side
    18,605.08x = 293,703,582.53
  5. Step 5: Solve for x
    x = 293,703,582.53/18,605.08
  6. Step 6: Final answer
    x = 15,786.20

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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.