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Finding the Fourth Proportional to 111,708.36, 167,681.90 and 45,191.96

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Solution

The fourth proportional to 111,708.36, 167,681.90 and 45,191.96 is: 67,836.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,708.36 : 167,681.90 = 45,191.96 : x
  2. Step 2: Convert to fraction form
    111,708.36/167,681.90 = 45,191.96/x
  3. Step 3: Cross multiply
    111,708.36x = 167,681.90 × 45,191.96
  4. Step 4: Simplify right side
    111,708.36x = 7,577,873,717.52
  5. Step 5: Solve for x
    x = 7,577,873,717.52/111,708.36
  6. Step 6: Final answer
    x = 67,836.23

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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.