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Finding the Fourth Proportional to 48,881.25, 73,321.88 and 11,945.25

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Solution

The fourth proportional to 48,881.25, 73,321.88 and 11,945.25 is: 17,917.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,881.25 : 73,321.88 = 11,945.25 : x
  2. Step 2: Convert to fraction form
    48,881.25/73,321.88 = 11,945.25/x
  3. Step 3: Cross multiply
    48,881.25x = 73,321.88 × 11,945.25
  4. Step 4: Simplify right side
    48,881.25x = 875,848,127.34
  5. Step 5: Solve for x
    x = 875,848,127.34/48,881.25
  6. Step 6: Final answer
    x = 17,917.88

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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.