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Finding the Fourth Proportional to 423,676.20, 635,513.82 and 108,133.16

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Solution

The fourth proportional to 423,676.20, 635,513.82 and 108,133.16 is: 162,199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,676.20 : 635,513.82 = 108,133.16 : x
  2. Step 2: Convert to fraction form
    423,676.20/635,513.82 = 108,133.16/x
  3. Step 3: Cross multiply
    423,676.20x = 635,513.82 × 108,133.16
  4. Step 4: Simplify right side
    423,676.20x = 68,720,117,580.27
  5. Step 5: Solve for x
    x = 68,720,117,580.27/423,676.20
  6. Step 6: Final answer
    x = 162,199.62

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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.