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Finding the Fourth Proportional to 18,152.80, 27,223.80 and 7,053.10

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Solution

The fourth proportional to 18,152.80, 27,223.80 and 7,053.10 is: 10,577.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,152.80 : 27,223.80 = 7,053.10 : x
  2. Step 2: Convert to fraction form
    18,152.80/27,223.80 = 7,053.10/x
  3. Step 3: Cross multiply
    18,152.80x = 27,223.80 × 7,053.10
  4. Step 4: Simplify right side
    18,152.80x = 192,012,183.78
  5. Step 5: Solve for x
    x = 192,012,183.78/18,152.80
  6. Step 6: Final answer
    x = 10,577.55

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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.