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Finding the Fourth Proportional to 73,205.70, 109,808.55 and 43,608.30

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Solution

The fourth proportional to 73,205.70, 109,808.55 and 43,608.30 is: 65,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,205.70 : 109,808.55 = 43,608.30 : x
  2. Step 2: Convert to fraction form
    73,205.70/109,808.55 = 43,608.30/x
  3. Step 3: Cross multiply
    73,205.70x = 109,808.55 × 43,608.30
  4. Step 4: Simplify right side
    73,205.70x = 4,788,564,190.97
  5. Step 5: Solve for x
    x = 4,788,564,190.97/73,205.70
  6. Step 6: Final answer
    x = 65,412.45

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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.