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Finding the Fourth Proportional to 81,951, 122,947.62 and 44,501.46

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Solution

The fourth proportional to 81,951, 122,947.62 and 44,501.46 is: 66,763.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,951 : 122,947.62 = 44,501.46 : x
  2. Step 2: Convert to fraction form
    81,951/122,947.62 = 44,501.46/x
  3. Step 3: Cross multiply
    81,951x = 122,947.62 × 44,501.46
  4. Step 4: Simplify right side
    81,951x = 5,471,348,593.53
  5. Step 5: Solve for x
    x = 5,471,348,593.53/81,951
  6. Step 6: Final answer
    x = 66,763.66

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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.