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Finding the Fourth Proportional to 74,504.83, 111,757.20 and 21,914.31

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Solution

The fourth proportional to 74,504.83, 111,757.20 and 21,914.31 is: 32,871.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,504.83 : 111,757.20 = 21,914.31 : x
  2. Step 2: Convert to fraction form
    74,504.83/111,757.20 = 21,914.31/x
  3. Step 3: Cross multiply
    74,504.83x = 111,757.20 × 21,914.31
  4. Step 4: Simplify right side
    74,504.83x = 2,449,081,925.53
  5. Step 5: Solve for x
    x = 2,449,081,925.53/74,504.83
  6. Step 6: Final answer
    x = 32,871.45

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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.