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Finding the Fourth Proportional to 73,806.48, 110,686.68 and 21,201.84

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Solution

The fourth proportional to 73,806.48, 110,686.68 and 21,201.84 is: 31,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,806.48 : 110,686.68 = 21,201.84 : x
  2. Step 2: Convert to fraction form
    73,806.48/110,686.68 = 21,201.84/x
  3. Step 3: Cross multiply
    73,806.48x = 110,686.68 × 21,201.84
  4. Step 4: Simplify right side
    73,806.48x = 2,346,761,279.49
  5. Step 5: Solve for x
    x = 2,346,761,279.49/73,806.48
  6. Step 6: Final answer
    x = 31,796.14

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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.