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Finding the Fourth Proportional to 354,953.54, 489,855.74 and 193,823.55

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Solution

The fourth proportional to 354,953.54, 489,855.74 and 193,823.55 is: 267,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,953.54 : 489,855.74 = 193,823.55 : x
  2. Step 2: Convert to fraction form
    354,953.54/489,855.74 = 193,823.55/x
  3. Step 3: Cross multiply
    354,953.54x = 489,855.74 × 193,823.55
  4. Step 4: Simplify right side
    354,953.54x = 94,945,577,545.56
  5. Step 5: Solve for x
    x = 94,945,577,545.56/354,953.54
  6. Step 6: Final answer
    x = 267,487.34

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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.