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Finding the Fourth Proportional to 18,744.04, 25,868 and 10,786.12

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Solution

The fourth proportional to 18,744.04, 25,868 and 10,786.12 is: 14,885.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.04 : 25,868 = 10,786.12 : x
  2. Step 2: Convert to fraction form
    18,744.04/25,868 = 10,786.12/x
  3. Step 3: Cross multiply
    18,744.04x = 25,868 × 10,786.12
  4. Step 4: Simplify right side
    18,744.04x = 279,015,352.16
  5. Step 5: Solve for x
    x = 279,015,352.16/18,744.04
  6. Step 6: Final answer
    x = 14,885.55

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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.