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Finding the Fourth Proportional to 73,806.48, 110,138.42 and 65,930.64

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Solution

The fourth proportional to 73,806.48, 110,138.42 and 65,930.64 is: 98,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,806.48 : 110,138.42 = 65,930.64 : x
  2. Step 2: Convert to fraction form
    73,806.48/110,138.42 = 65,930.64/x
  3. Step 3: Cross multiply
    73,806.48x = 110,138.42 × 65,930.64
  4. Step 4: Simplify right side
    73,806.48x = 7,261,496,519.19
  5. Step 5: Solve for x
    x = 7,261,496,519.19/73,806.48
  6. Step 6: Final answer
    x = 98,385.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.