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Finding the Fourth Proportional to 73,906.13, 110,860.10 and 21,316.07

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Solution

The fourth proportional to 73,906.13, 110,860.10 and 21,316.07 is: 31,974.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,906.13 : 110,860.10 = 21,316.07 : x
  2. Step 2: Convert to fraction form
    73,906.13/110,860.10 = 21,316.07/x
  3. Step 3: Cross multiply
    73,906.13x = 110,860.10 × 21,316.07
  4. Step 4: Simplify right side
    73,906.13x = 2,363,101,651.81
  5. Step 5: Solve for x
    x = 2,363,101,651.81/73,906.13
  6. Step 6: Final answer
    x = 31,974.37

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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.