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Finding the Fourth Proportional to 18,156.80, 27,235.20 and 15,969.80

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Solution

The fourth proportional to 18,156.80, 27,235.20 and 15,969.80 is: 23,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.80 : 27,235.20 = 15,969.80 : x
  2. Step 2: Convert to fraction form
    18,156.80/27,235.20 = 15,969.80/x
  3. Step 3: Cross multiply
    18,156.80x = 27,235.20 × 15,969.80
  4. Step 4: Simplify right side
    18,156.80x = 434,940,696.96
  5. Step 5: Solve for x
    x = 434,940,696.96/18,156.80
  6. Step 6: Final answer
    x = 23,954.70

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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.