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Finding the Fourth Proportional to 111,027.80, 166,541.70 and 104,904.20

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Solution

The fourth proportional to 111,027.80, 166,541.70 and 104,904.20 is: 157,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,027.80 : 166,541.70 = 104,904.20 : x
  2. Step 2: Convert to fraction form
    111,027.80/166,541.70 = 104,904.20/x
  3. Step 3: Cross multiply
    111,027.80x = 166,541.70 × 104,904.20
  4. Step 4: Simplify right side
    111,027.80x = 17,470,923,805.14
  5. Step 5: Solve for x
    x = 17,470,923,805.14/111,027.80
  6. Step 6: Final answer
    x = 157,356.30

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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.