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Finding the Fourth Proportional to 111,802.81, 167,720.82 and 36,930.86

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Solution

The fourth proportional to 111,802.81, 167,720.82 and 36,930.86 is: 55,401.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,802.81 : 167,720.82 = 36,930.86 : x
  2. Step 2: Convert to fraction form
    111,802.81/167,720.82 = 36,930.86/x
  3. Step 3: Cross multiply
    111,802.81x = 167,720.82 × 36,930.86
  4. Step 4: Simplify right side
    111,802.81x = 6,194,074,122.51
  5. Step 5: Solve for x
    x = 6,194,074,122.51/111,802.81
  6. Step 6: Final answer
    x = 55,401.78

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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.