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Finding the Fourth Proportional to 99,911.01, 149,863.05 and 25,031.80

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Solution

The fourth proportional to 99,911.01, 149,863.05 and 25,031.80 is: 37,546.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,911.01 : 149,863.05 = 25,031.80 : x
  2. Step 2: Convert to fraction form
    99,911.01/149,863.05 = 25,031.80/x
  3. Step 3: Cross multiply
    99,911.01x = 149,863.05 × 25,031.80
  4. Step 4: Simplify right side
    99,911.01x = 3,751,341,894.99
  5. Step 5: Solve for x
    x = 3,751,341,894.99/99,911.01
  6. Step 6: Final answer
    x = 37,546.83

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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.