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Finding the Fourth Proportional to 72,263.76, 108,255.36 and 53,253.86

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Solution

The fourth proportional to 72,263.76, 108,255.36 and 53,253.86 is: 79,777.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,263.76 : 108,255.36 = 53,253.86 : x
  2. Step 2: Convert to fraction form
    72,263.76/108,255.36 = 53,253.86/x
  3. Step 3: Cross multiply
    72,263.76x = 108,255.36 × 53,253.86
  4. Step 4: Simplify right side
    72,263.76x = 5,765,015,785.69
  5. Step 5: Solve for x
    x = 5,765,015,785.69/72,263.76
  6. Step 6: Final answer
    x = 79,777.41

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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.