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Finding the Fourth Proportional to 73,965.60, 111,021.30 and 36,567.90

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Solution

The fourth proportional to 73,965.60, 111,021.30 and 36,567.90 is: 54,887.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,965.60 : 111,021.30 = 36,567.90 : x
  2. Step 2: Convert to fraction form
    73,965.60/111,021.30 = 36,567.90/x
  3. Step 3: Cross multiply
    73,965.60x = 111,021.30 × 36,567.90
  4. Step 4: Simplify right side
    73,965.60x = 4,059,815,796.27
  5. Step 5: Solve for x
    x = 4,059,815,796.27/73,965.60
  6. Step 6: Final answer
    x = 54,887.89

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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.