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Finding the Fourth Proportional to 18,286,921.80, 25,568,098.20 and 18,286,921.80

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Solution

The fourth proportional to 18,286,921.80, 25,568,098.20 and 18,286,921.80 is: 25,568,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286,921.80 : 25,568,098.20 = 18,286,921.80 : x
  2. Step 2: Convert to fraction form
    18,286,921.80/25,568,098.20 = 18,286,921.80/x
  3. Step 3: Cross multiply
    18,286,921.80x = 25,568,098.20 × 18,286,921.80
  4. Step 4: Simplify right side
    18,286,921.80x = 467,561,812,358,120.75
  5. Step 5: Solve for x
    x = 467,561,812,358,120.75/18,286,921.80
  6. Step 6: Final answer
    x = 25,568,098.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.