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Finding the Fourth Proportional to 20,404.01, 30,581.39 and 10,537.89

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Solution

The fourth proportional to 20,404.01, 30,581.39 and 10,537.89 is: 15,794.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.01 : 30,581.39 = 10,537.89 : x
  2. Step 2: Convert to fraction form
    20,404.01/30,581.39 = 10,537.89/x
  3. Step 3: Cross multiply
    20,404.01x = 30,581.39 × 10,537.89
  4. Step 4: Simplify right side
    20,404.01x = 322,263,271.18
  5. Step 5: Solve for x
    x = 322,263,271.18/20,404.01
  6. Step 6: Final answer
    x = 15,794.12

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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.