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Finding the Fourth Proportional to 65,481.66, 98,222.58 and 43,290.54

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Solution

The fourth proportional to 65,481.66, 98,222.58 and 43,290.54 is: 64,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,481.66 : 98,222.58 = 43,290.54 : x
  2. Step 2: Convert to fraction form
    65,481.66/98,222.58 = 43,290.54/x
  3. Step 3: Cross multiply
    65,481.66x = 98,222.58 × 43,290.54
  4. Step 4: Simplify right side
    65,481.66x = 4,252,108,528.39
  5. Step 5: Solve for x
    x = 4,252,108,528.39/65,481.66
  6. Step 6: Final answer
    x = 64,935.87

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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.