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Finding the Fourth Proportional to 168,805.17, 252,926.60 and 118,780.16

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Solution

The fourth proportional to 168,805.17, 252,926.60 and 118,780.16 is: 177,972.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,805.17 : 252,926.60 = 118,780.16 : x
  2. Step 2: Convert to fraction form
    168,805.17/252,926.60 = 118,780.16/x
  3. Step 3: Cross multiply
    168,805.17x = 252,926.60 × 118,780.16
  4. Step 4: Simplify right side
    168,805.17x = 30,042,660,157.72
  5. Step 5: Solve for x
    x = 30,042,660,157.72/168,805.17
  6. Step 6: Final answer
    x = 177,972.39

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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.