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Finding the Fourth Proportional to 111,279.24, 166,929.14 and 36,399.81

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Solution

The fourth proportional to 111,279.24, 166,929.14 and 36,399.81 is: 54,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,279.24 : 166,929.14 = 36,399.81 : x
  2. Step 2: Convert to fraction form
    111,279.24/166,929.14 = 36,399.81/x
  3. Step 3: Cross multiply
    111,279.24x = 166,929.14 × 36,399.81
  4. Step 4: Simplify right side
    111,279.24x = 6,076,188,979.46
  5. Step 5: Solve for x
    x = 6,076,188,979.46/111,279.24
  6. Step 6: Final answer
    x = 54,603.08

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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.