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Finding the Fourth Proportional to 260,648.42, 391,004.82 and 92,134.01

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Solution

The fourth proportional to 260,648.42, 391,004.82 and 92,134.01 is: 138,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,648.42 : 391,004.82 = 92,134.01 : x
  2. Step 2: Convert to fraction form
    260,648.42/391,004.82 = 92,134.01/x
  3. Step 3: Cross multiply
    260,648.42x = 391,004.82 × 92,134.01
  4. Step 4: Simplify right side
    260,648.42x = 36,024,841,995.93
  5. Step 5: Solve for x
    x = 36,024,841,995.93/260,648.42
  6. Step 6: Final answer
    x = 138,212.39

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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.