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Finding the Fourth Proportional to 118,448.06, 177,742.08 and 43,620.80

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Solution

The fourth proportional to 118,448.06, 177,742.08 and 43,620.80 is: 65,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,448.06 : 177,742.08 = 43,620.80 : x
  2. Step 2: Convert to fraction form
    118,448.06/177,742.08 = 43,620.80/x
  3. Step 3: Cross multiply
    118,448.06x = 177,742.08 × 43,620.80
  4. Step 4: Simplify right side
    118,448.06x = 7,753,250,834.55
  5. Step 5: Solve for x
    x = 7,753,250,834.55/118,448.06
  6. Step 6: Final answer
    x = 65,456.97

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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.