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Finding the Fourth Proportional to 111,169.16, 166,731.53 and 40,089.81

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Solution

The fourth proportional to 111,169.16, 166,731.53 and 40,089.81 is: 60,126.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,169.16 : 166,731.53 = 40,089.81 : x
  2. Step 2: Convert to fraction form
    111,169.16/166,731.53 = 40,089.81/x
  3. Step 3: Cross multiply
    111,169.16x = 166,731.53 × 40,089.81
  4. Step 4: Simplify right side
    111,169.16x = 6,684,235,158.26
  5. Step 5: Solve for x
    x = 6,684,235,158.26/111,169.16
  6. Step 6: Final answer
    x = 60,126.71

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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.