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Finding the Fourth Proportional to 354,636.09, 489,396.78 and 193,491.27

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Solution

The fourth proportional to 354,636.09, 489,396.78 and 193,491.27 is: 267,017.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,636.09 : 489,396.78 = 193,491.27 : x
  2. Step 2: Convert to fraction form
    354,636.09/489,396.78 = 193,491.27/x
  3. Step 3: Cross multiply
    354,636.09x = 489,396.78 × 193,491.27
  4. Step 4: Simplify right side
    354,636.09x = 94,694,004,496.11
  5. Step 5: Solve for x
    x = 94,694,004,496.11/354,636.09
  6. Step 6: Final answer
    x = 267,017.39

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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.