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Finding the Fourth Proportional to 86,069.70, 118,680.48 and 58,850.28

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Solution

The fourth proportional to 86,069.70, 118,680.48 and 58,850.28 is: 81,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,069.70 : 118,680.48 = 58,850.28 : x
  2. Step 2: Convert to fraction form
    86,069.70/118,680.48 = 58,850.28/x
  3. Step 3: Cross multiply
    86,069.70x = 118,680.48 × 58,850.28
  4. Step 4: Simplify right side
    86,069.70x = 6,984,379,478.53
  5. Step 5: Solve for x
    x = 6,984,379,478.53/86,069.70
  6. Step 6: Final answer
    x = 81,147.95

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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.