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Finding the Fourth Proportional to 270,638.22, 405,638.98 and 110,615.42

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Solution

The fourth proportional to 270,638.22, 405,638.98 and 110,615.42 is: 165,793.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,638.22 : 405,638.98 = 110,615.42 : x
  2. Step 2: Convert to fraction form
    270,638.22/405,638.98 = 110,615.42/x
  3. Step 3: Cross multiply
    270,638.22x = 405,638.98 × 110,615.42
  4. Step 4: Simplify right side
    270,638.22x = 44,869,926,141.07
  5. Step 5: Solve for x
    x = 44,869,926,141.07/270,638.22
  6. Step 6: Final answer
    x = 165,793.01

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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.