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Finding the Fourth Proportional to 260,945.80, 391,572.30 and 94,712.20

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Solution

The fourth proportional to 260,945.80, 391,572.30 and 94,712.20 is: 142,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,945.80 : 391,572.30 = 94,712.20 : x
  2. Step 2: Convert to fraction form
    260,945.80/391,572.30 = 94,712.20/x
  3. Step 3: Cross multiply
    260,945.80x = 391,572.30 × 94,712.20
  4. Step 4: Simplify right side
    260,945.80x = 37,086,673,992.06
  5. Step 5: Solve for x
    x = 37,086,673,992.06/260,945.80
  6. Step 6: Final answer
    x = 142,124.05

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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.