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Finding the Fourth Proportional to 111,874.76, 167,812.14 and 92,111.81

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Solution

The fourth proportional to 111,874.76, 167,812.14 and 92,111.81 is: 138,167.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,874.76 : 167,812.14 = 92,111.81 : x
  2. Step 2: Convert to fraction form
    111,874.76/167,812.14 = 92,111.81/x
  3. Step 3: Cross multiply
    111,874.76x = 167,812.14 × 92,111.81
  4. Step 4: Simplify right side
    111,874.76x = 15,457,479,116.31
  5. Step 5: Solve for x
    x = 15,457,479,116.31/111,874.76
  6. Step 6: Final answer
    x = 138,167.71

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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.