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Finding the Fourth Proportional to 99,906, 149,855.55 and 25,026.80

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Solution

The fourth proportional to 99,906, 149,855.55 and 25,026.80 is: 37,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,906 : 149,855.55 = 25,026.80 : x
  2. Step 2: Convert to fraction form
    99,906/149,855.55 = 25,026.80/x
  3. Step 3: Cross multiply
    99,906x = 149,855.55 × 25,026.80
  4. Step 4: Simplify right side
    99,906x = 3,750,404,129.46
  5. Step 5: Solve for x
    x = 3,750,404,129.46/99,906
  6. Step 6: Final answer
    x = 37,539.33

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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.