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Finding the Fourth Proportional to 324,390.61, 486,533.08 and 113,979.43

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Solution

The fourth proportional to 324,390.61, 486,533.08 and 113,979.43 is: 170,950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,390.61 : 486,533.08 = 113,979.43 : x
  2. Step 2: Convert to fraction form
    324,390.61/486,533.08 = 113,979.43/x
  3. Step 3: Cross multiply
    324,390.61x = 486,533.08 × 113,979.43
  4. Step 4: Simplify right side
    324,390.61x = 55,454,763,134.54
  5. Step 5: Solve for x
    x = 55,454,763,134.54/324,390.61
  6. Step 6: Final answer
    x = 170,950.58

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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.