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Finding the Fourth Proportional to 423,659.23, 635,488.31 and 108,116.15

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Solution

The fourth proportional to 423,659.23, 635,488.31 and 108,116.15 is: 162,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,659.23 : 635,488.31 = 108,116.15 : x
  2. Step 2: Convert to fraction form
    423,659.23/635,488.31 = 108,116.15/x
  3. Step 3: Cross multiply
    423,659.23x = 635,488.31 × 108,116.15
  4. Step 4: Simplify right side
    423,659.23x = 68,706,546,540.06
  5. Step 5: Solve for x
    x = 68,706,546,540.06/423,659.23
  6. Step 6: Final answer
    x = 162,174.08

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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.