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Finding the Fourth Proportional to 111,252.80, 166,765.80 and 55,006.40

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Solution

The fourth proportional to 111,252.80, 166,765.80 and 55,006.40 is: 82,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,252.80 : 166,765.80 = 55,006.40 : x
  2. Step 2: Convert to fraction form
    111,252.80/166,765.80 = 55,006.40/x
  3. Step 3: Cross multiply
    111,252.80x = 166,765.80 × 55,006.40
  4. Step 4: Simplify right side
    111,252.80x = 9,173,186,301.12
  5. Step 5: Solve for x
    x = 9,173,186,301.12/111,252.80
  6. Step 6: Final answer
    x = 82,453.53

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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.