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Finding the Fourth Proportional to 72,477.59, 108,754.38 and 52,650.86

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Solution

The fourth proportional to 72,477.59, 108,754.38 and 52,650.86 is: 79,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,477.59 : 108,754.38 = 52,650.86 : x
  2. Step 2: Convert to fraction form
    72,477.59/108,754.38 = 52,650.86/x
  3. Step 3: Cross multiply
    72,477.59x = 108,754.38 × 52,650.86
  4. Step 4: Simplify right side
    72,477.59x = 5,726,011,635.77
  5. Step 5: Solve for x
    x = 5,726,011,635.77/72,477.59
  6. Step 6: Final answer
    x = 79,003.89

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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.