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Finding the Fourth Proportional to 319,585.89, 441,188.20 and 198,766.12

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Solution

The fourth proportional to 319,585.89, 441,188.20 and 198,766.12 is: 274,396.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,585.89 : 441,188.20 = 198,766.12 : x
  2. Step 2: Convert to fraction form
    319,585.89/441,188.20 = 198,766.12/x
  3. Step 3: Cross multiply
    319,585.89x = 441,188.20 × 198,766.12
  4. Step 4: Simplify right side
    319,585.89x = 87,693,266,703.78
  5. Step 5: Solve for x
    x = 87,693,266,703.78/319,585.89
  6. Step 6: Final answer
    x = 274,396.55

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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.