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Finding the Fourth Proportional to 111,884.72, 167,723.40 and 55,690.16

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Solution

The fourth proportional to 111,884.72, 167,723.40 and 55,690.16 is: 83,483.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,884.72 : 167,723.40 = 55,690.16 : x
  2. Step 2: Convert to fraction form
    111,884.72/167,723.40 = 55,690.16/x
  3. Step 3: Cross multiply
    111,884.72x = 167,723.40 × 55,690.16
  4. Step 4: Simplify right side
    111,884.72x = 9,340,542,981.74
  5. Step 5: Solve for x
    x = 9,340,542,981.74/111,884.72
  6. Step 6: Final answer
    x = 83,483.63

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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.