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Finding the Fourth Proportional to 111,029.40, 166,544.10 and 104,905.80

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Solution

The fourth proportional to 111,029.40, 166,544.10 and 104,905.80 is: 157,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,029.40 : 166,544.10 = 104,905.80 : x
  2. Step 2: Convert to fraction form
    111,029.40/166,544.10 = 104,905.80/x
  3. Step 3: Cross multiply
    111,029.40x = 166,544.10 × 104,905.80
  4. Step 4: Simplify right side
    111,029.40x = 17,471,442,045.78
  5. Step 5: Solve for x
    x = 17,471,442,045.78/111,029.40
  6. Step 6: Final answer
    x = 157,358.70

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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.