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Finding the Fourth Proportional to 18,363.80, 27,546.60 and 9,615.80

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Solution

The fourth proportional to 18,363.80, 27,546.60 and 9,615.80 is: 14,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.80 : 27,546.60 = 9,615.80 : x
  2. Step 2: Convert to fraction form
    18,363.80/27,546.60 = 9,615.80/x
  3. Step 3: Cross multiply
    18,363.80x = 27,546.60 × 9,615.80
  4. Step 4: Simplify right side
    18,363.80x = 264,882,596.28
  5. Step 5: Solve for x
    x = 264,882,596.28/18,363.80
  6. Step 6: Final answer
    x = 14,424.17

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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.