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Finding the Fourth Proportional to 84,971.73, 127,370.12 and 45,518.25

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Solution

The fourth proportional to 84,971.73, 127,370.12 and 45,518.25 is: 68,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,971.73 : 127,370.12 = 45,518.25 : x
  2. Step 2: Convert to fraction form
    84,971.73/127,370.12 = 45,518.25/x
  3. Step 3: Cross multiply
    84,971.73x = 127,370.12 × 45,518.25
  4. Step 4: Simplify right side
    84,971.73x = 5,797,665,470.78
  5. Step 5: Solve for x
    x = 5,797,665,470.78/84,971.73
  6. Step 6: Final answer
    x = 68,230.52

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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.