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Finding the Fourth Proportional to 260,882.32, 391,498.84 and 92,402.05

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Solution

The fourth proportional to 260,882.32, 391,498.84 and 92,402.05 is: 138,665.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,882.32 : 391,498.84 = 92,402.05 : x
  2. Step 2: Convert to fraction form
    260,882.32/391,498.84 = 92,402.05/x
  3. Step 3: Cross multiply
    260,882.32x = 391,498.84 × 92,402.05
  4. Step 4: Simplify right side
    260,882.32x = 36,175,293,431.13
  5. Step 5: Solve for x
    x = 36,175,293,431.13/260,882.32
  6. Step 6: Final answer
    x = 138,665.18

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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.