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Finding the Fourth Proportional to 324,387.61, 486,528.58 and 113,976.43

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Solution

The fourth proportional to 324,387.61, 486,528.58 and 113,976.43 is: 170,946.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,387.61 : 486,528.58 = 113,976.43 : x
  2. Step 2: Convert to fraction form
    324,387.61/486,528.58 = 113,976.43/x
  3. Step 3: Cross multiply
    324,387.61x = 486,528.58 × 113,976.43
  4. Step 4: Simplify right side
    324,387.61x = 55,452,790,641.37
  5. Step 5: Solve for x
    x = 55,452,790,641.37/324,387.61
  6. Step 6: Final answer
    x = 170,946.08

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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.