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Finding the Fourth Proportional to 18,974.80, 28,462.20 and 18,974.80

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Solution

The fourth proportional to 18,974.80, 28,462.20 and 18,974.80 is: 28,462.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.80 : 28,462.20 = 18,974.80 : x
  2. Step 2: Convert to fraction form
    18,974.80/28,462.20 = 18,974.80/x
  3. Step 3: Cross multiply
    18,974.80x = 28,462.20 × 18,974.80
  4. Step 4: Simplify right side
    18,974.80x = 540,064,552.56
  5. Step 5: Solve for x
    x = 540,064,552.56/18,974.80
  6. Step 6: Final answer
    x = 28,462.20

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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.