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Finding the Fourth Proportional to 72,548.79, 108,694.54 and 61,910.88

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Solution

The fourth proportional to 72,548.79, 108,694.54 and 61,910.88 is: 92,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,548.79 : 108,694.54 = 61,910.88 : x
  2. Step 2: Convert to fraction form
    72,548.79/108,694.54 = 61,910.88/x
  3. Step 3: Cross multiply
    72,548.79x = 108,694.54 × 61,910.88
  4. Step 4: Simplify right side
    72,548.79x = 6,729,374,622.60
  5. Step 5: Solve for x
    x = 6,729,374,622.60/72,548.79
  6. Step 6: Final answer
    x = 92,756.54

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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.