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Finding the Fourth Proportional to 111,077.79, 166,616.51 and 27,971.79

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Solution

The fourth proportional to 111,077.79, 166,616.51 and 27,971.79 is: 41,957.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,077.79 : 166,616.51 = 27,971.79 : x
  2. Step 2: Convert to fraction form
    111,077.79/166,616.51 = 27,971.79/x
  3. Step 3: Cross multiply
    111,077.79x = 166,616.51 × 27,971.79
  4. Step 4: Simplify right side
    111,077.79x = 4,660,561,888.39
  5. Step 5: Solve for x
    x = 4,660,561,888.39/111,077.79
  6. Step 6: Final answer
    x = 41,957.64

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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.