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Finding the Fourth Proportional to 72,251.81, 108,237.50 and 53,241.95

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Solution

The fourth proportional to 72,251.81, 108,237.50 and 53,241.95 is: 79,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,251.81 : 108,237.50 = 53,241.95 : x
  2. Step 2: Convert to fraction form
    72,251.81/108,237.50 = 53,241.95/x
  3. Step 3: Cross multiply
    72,251.81x = 108,237.50 × 53,241.95
  4. Step 4: Simplify right side
    72,251.81x = 5,762,775,296.92
  5. Step 5: Solve for x
    x = 5,762,775,296.92/72,251.81
  6. Step 6: Final answer
    x = 79,759.60

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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.