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Finding the Fourth Proportional to 86,086.80, 118,780.34 and 52,094.43

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Solution

The fourth proportional to 86,086.80, 118,780.34 and 52,094.43 is: 71,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,086.80 : 118,780.34 = 52,094.43 : x
  2. Step 2: Convert to fraction form
    86,086.80/118,780.34 = 52,094.43/x
  3. Step 3: Cross multiply
    86,086.80x = 118,780.34 × 52,094.43
  4. Step 4: Simplify right side
    86,086.80x = 6,187,793,847.03
  5. Step 5: Solve for x
    x = 6,187,793,847.03/86,086.80
  6. Step 6: Final answer
    x = 71,878.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.