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Finding the Fourth Proportional to 111,579.01, 153,911.42 and 66,227.11

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Solution

The fourth proportional to 111,579.01, 153,911.42 and 66,227.11 is: 91,353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.01 : 153,911.42 = 66,227.11 : x
  2. Step 2: Convert to fraction form
    111,579.01/153,911.42 = 66,227.11/x
  3. Step 3: Cross multiply
    111,579.01x = 153,911.42 × 66,227.11
  4. Step 4: Simplify right side
    111,579.01x = 10,193,108,211.46
  5. Step 5: Solve for x
    x = 10,193,108,211.46/111,579.01
  6. Step 6: Final answer
    x = 91,353.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.