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Finding the Fourth Proportional to 111,036.30, 166,554.45 and 98,789.10

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Solution

The fourth proportional to 111,036.30, 166,554.45 and 98,789.10 is: 148,183.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,036.30 : 166,554.45 = 98,789.10 : x
  2. Step 2: Convert to fraction form
    111,036.30/166,554.45 = 98,789.10/x
  3. Step 3: Cross multiply
    111,036.30x = 166,554.45 × 98,789.10
  4. Step 4: Simplify right side
    111,036.30x = 16,453,764,216.50
  5. Step 5: Solve for x
    x = 16,453,764,216.50/111,036.30
  6. Step 6: Final answer
    x = 148,183.65

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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.