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Finding the Fourth Proportional to 73,418.60, 109,836.30 and 63,666.20

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Solution

The fourth proportional to 73,418.60, 109,836.30 and 63,666.20 is: 95,246.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,418.60 : 109,836.30 = 63,666.20 : x
  2. Step 2: Convert to fraction form
    73,418.60/109,836.30 = 63,666.20/x
  3. Step 3: Cross multiply
    73,418.60x = 109,836.30 × 63,666.20
  4. Step 4: Simplify right side
    73,418.60x = 6,992,859,843.06
  5. Step 5: Solve for x
    x = 6,992,859,843.06/73,418.60
  6. Step 6: Final answer
    x = 95,246.43

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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.