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Finding the Fourth Proportional to 54,606.60, 81,996.30 and 39,918.60

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Solution

The fourth proportional to 54,606.60, 81,996.30 and 39,918.60 is: 59,941.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,606.60 : 81,996.30 = 39,918.60 : x
  2. Step 2: Convert to fraction form
    54,606.60/81,996.30 = 39,918.60/x
  3. Step 3: Cross multiply
    54,606.60x = 81,996.30 × 39,918.60
  4. Step 4: Simplify right side
    54,606.60x = 3,273,177,501.18
  5. Step 5: Solve for x
    x = 3,273,177,501.18/54,606.60
  6. Step 6: Final answer
    x = 59,941.06

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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.