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Finding the Fourth Proportional to 111,178.40, 166,620.16 and 58,625.08

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Solution

The fourth proportional to 111,178.40, 166,620.16 and 58,625.08 is: 87,859.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,178.40 : 166,620.16 = 58,625.08 : x
  2. Step 2: Convert to fraction form
    111,178.40/166,620.16 = 58,625.08/x
  3. Step 3: Cross multiply
    111,178.40x = 166,620.16 × 58,625.08
  4. Step 4: Simplify right side
    111,178.40x = 9,768,120,209.61
  5. Step 5: Solve for x
    x = 9,768,120,209.61/111,178.40
  6. Step 6: Final answer
    x = 87,859.87

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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.