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Finding the Fourth Proportional to 354,907.19, 489,770.60 and 193,760.39

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Solution

The fourth proportional to 354,907.19, 489,770.60 and 193,760.39 is: 267,388.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,907.19 : 489,770.60 = 193,760.39 : x
  2. Step 2: Convert to fraction form
    354,907.19/489,770.60 = 193,760.39/x
  3. Step 3: Cross multiply
    354,907.19x = 489,770.60 × 193,760.39
  4. Step 4: Simplify right side
    354,907.19x = 94,898,139,048.88
  5. Step 5: Solve for x
    x = 94,898,139,048.88/354,907.19
  6. Step 6: Final answer
    x = 267,388.61

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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.