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Finding the Fourth Proportional to 354,863.54, 489,712.57 and 193,718.70

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Solution

The fourth proportional to 354,863.54, 489,712.57 and 193,718.70 is: 267,332.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,863.54 : 489,712.57 = 193,718.70 : x
  2. Step 2: Convert to fraction form
    354,863.54/489,712.57 = 193,718.70/x
  3. Step 3: Cross multiply
    354,863.54x = 489,712.57 × 193,718.70
  4. Step 4: Simplify right side
    354,863.54x = 94,866,481,949.76
  5. Step 5: Solve for x
    x = 94,866,481,949.76/354,863.54
  6. Step 6: Final answer
    x = 267,332.29

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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.