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Finding the Fourth Proportional to 260,452.56, 390,800.38 and 92,100.38

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Solution

The fourth proportional to 260,452.56, 390,800.38 and 92,100.38 is: 138,193.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,452.56 : 390,800.38 = 92,100.38 : x
  2. Step 2: Convert to fraction form
    260,452.56/390,800.38 = 92,100.38/x
  3. Step 3: Cross multiply
    260,452.56x = 390,800.38 × 92,100.38
  4. Step 4: Simplify right side
    260,452.56x = 35,992,863,502.14
  5. Step 5: Solve for x
    x = 35,992,863,502.14/260,452.56
  6. Step 6: Final answer
    x = 138,193.55

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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.