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Finding the Fourth Proportional to 18,786.84, 28,199.52 and 9,433.68

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Solution

The fourth proportional to 18,786.84, 28,199.52 and 9,433.68 is: 14,160.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.84 : 28,199.52 = 9,433.68 : x
  2. Step 2: Convert to fraction form
    18,786.84/28,199.52 = 9,433.68/x
  3. Step 3: Cross multiply
    18,786.84x = 28,199.52 × 9,433.68
  4. Step 4: Simplify right side
    18,786.84x = 266,025,247.83
  5. Step 5: Solve for x
    x = 266,025,247.83/18,786.84
  6. Step 6: Final answer
    x = 14,160.19

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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.