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Finding the Fourth Proportional to 54,630.40, 81,945.60 and 37,717.60

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Solution

The fourth proportional to 54,630.40, 81,945.60 and 37,717.60 is: 56,576.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,630.40 : 81,945.60 = 37,717.60 : x
  2. Step 2: Convert to fraction form
    54,630.40/81,945.60 = 37,717.60/x
  3. Step 3: Cross multiply
    54,630.40x = 81,945.60 × 37,717.60
  4. Step 4: Simplify right side
    54,630.40x = 3,090,791,362.56
  5. Step 5: Solve for x
    x = 3,090,791,362.56/54,630.40
  6. Step 6: Final answer
    x = 56,576.40

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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.