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Finding the Fourth Proportional to 85,770.86, 118,363.82 and 52,236.86

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Solution

The fourth proportional to 85,770.86, 118,363.82 and 52,236.86 is: 72,086.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,770.86 : 118,363.82 = 52,236.86 : x
  2. Step 2: Convert to fraction form
    85,770.86/118,363.82 = 52,236.86/x
  3. Step 3: Cross multiply
    85,770.86x = 118,363.82 × 52,236.86
  4. Step 4: Simplify right side
    85,770.86x = 6,182,953,441.40
  5. Step 5: Solve for x
    x = 6,182,953,441.40/85,770.86
  6. Step 6: Final answer
    x = 72,086.88

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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.