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Finding the Fourth Proportional to 216,714.82, 324,991.39 and 74,519.87

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Solution

The fourth proportional to 216,714.82, 324,991.39 and 74,519.87 is: 111,752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,714.82 : 324,991.39 = 74,519.87 : x
  2. Step 2: Convert to fraction form
    216,714.82/324,991.39 = 74,519.87/x
  3. Step 3: Cross multiply
    216,714.82x = 324,991.39 × 74,519.87
  4. Step 4: Simplify right side
    216,714.82x = 24,218,316,133.92
  5. Step 5: Solve for x
    x = 24,218,316,133.92/216,714.82
  6. Step 6: Final answer
    x = 111,752.01

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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.