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Finding the Fourth Proportional to 339,990.48, 469,180.20 and 189,084.24

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Solution

The fourth proportional to 339,990.48, 469,180.20 and 189,084.24 is: 260,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,990.48 : 469,180.20 = 189,084.24 : x
  2. Step 2: Convert to fraction form
    339,990.48/469,180.20 = 189,084.24/x
  3. Step 3: Cross multiply
    339,990.48x = 469,180.20 × 189,084.24
  4. Step 4: Simplify right side
    339,990.48x = 88,714,581,540.05
  5. Step 5: Solve for x
    x = 88,714,581,540.05/339,990.48
  6. Step 6: Final answer
    x = 260,932.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.