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Finding the Fourth Proportional to 111,260.40, 166,938.60 and 64,553.20

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Solution

The fourth proportional to 111,260.40, 166,938.60 and 64,553.20 is: 96,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,260.40 : 166,938.60 = 64,553.20 : x
  2. Step 2: Convert to fraction form
    111,260.40/166,938.60 = 64,553.20/x
  3. Step 3: Cross multiply
    111,260.40x = 166,938.60 × 64,553.20
  4. Step 4: Simplify right side
    111,260.40x = 10,776,420,833.52
  5. Step 5: Solve for x
    x = 10,776,420,833.52/111,260.40
  6. Step 6: Final answer
    x = 96,857.65

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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.