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Finding the Fourth Proportional to 354,691.18, 489,475.07 and 193,549.78

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Solution

The fourth proportional to 354,691.18, 489,475.07 and 193,549.78 is: 267,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,691.18 : 489,475.07 = 193,549.78 : x
  2. Step 2: Convert to fraction form
    354,691.18/489,475.07 = 193,549.78/x
  3. Step 3: Cross multiply
    354,691.18x = 489,475.07 × 193,549.78
  4. Step 4: Simplify right side
    354,691.18x = 94,737,792,113.98
  5. Step 5: Solve for x
    x = 94,737,792,113.98/354,691.18
  6. Step 6: Final answer
    x = 267,099.37

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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.