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Finding the Fourth Proportional to 423,647.70, 635,471.24 and 108,104.64

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Solution

The fourth proportional to 423,647.70, 635,471.24 and 108,104.64 is: 162,156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,647.70 : 635,471.24 = 108,104.64 : x
  2. Step 2: Convert to fraction form
    423,647.70/635,471.24 = 108,104.64/x
  3. Step 3: Cross multiply
    423,647.70x = 635,471.24 × 108,104.64
  4. Step 4: Simplify right side
    423,647.70x = 68,697,389,090.03
  5. Step 5: Solve for x
    x = 68,697,389,090.03/423,647.70
  6. Step 6: Final answer
    x = 162,156.88

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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.