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Finding the Fourth Proportional to 99,246.26, 148,851.81 and 45,198.54

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Solution

The fourth proportional to 99,246.26, 148,851.81 and 45,198.54 is: 67,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,246.26 : 148,851.81 = 45,198.54 : x
  2. Step 2: Convert to fraction form
    99,246.26/148,851.81 = 45,198.54/x
  3. Step 3: Cross multiply
    99,246.26x = 148,851.81 × 45,198.54
  4. Step 4: Simplify right side
    99,246.26x = 6,727,884,488.36
  5. Step 5: Solve for x
    x = 6,727,884,488.36/99,246.26
  6. Step 6: Final answer
    x = 67,789.80

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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.