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Finding the Fourth Proportional to 260,876.70, 391,490.41 and 92,396.42

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Solution

The fourth proportional to 260,876.70, 391,490.41 and 92,396.42 is: 138,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,876.70 : 391,490.41 = 92,396.42 : x
  2. Step 2: Convert to fraction form
    260,876.70/391,490.41 = 92,396.42/x
  3. Step 3: Cross multiply
    260,876.70x = 391,490.41 × 92,396.42
  4. Step 4: Simplify right side
    260,876.70x = 36,172,312,348.33
  5. Step 5: Solve for x
    x = 36,172,312,348.33/260,876.70
  6. Step 6: Final answer
    x = 138,656.74

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1.5x scale

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.