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Finding the Fourth Proportional to 333,991.42, 500,880.21 and 109,290.94

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Solution

The fourth proportional to 333,991.42, 500,880.21 and 109,290.94 is: 163,901.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,991.42 : 500,880.21 = 109,290.94 : x
  2. Step 2: Convert to fraction form
    333,991.42/500,880.21 = 109,290.94/x
  3. Step 3: Cross multiply
    333,991.42x = 500,880.21 × 109,290.94
  4. Step 4: Simplify right side
    333,991.42x = 54,741,668,978.30
  5. Step 5: Solve for x
    x = 54,741,668,978.30/333,991.42
  6. Step 6: Final answer
    x = 163,901.42

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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.