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Finding the Fourth Proportional to 465,894.38, 698,857.07 and 128,906.79

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Solution

The fourth proportional to 465,894.38, 698,857.07 and 128,906.79 is: 193,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,894.38 : 698,857.07 = 128,906.79 : x
  2. Step 2: Convert to fraction form
    465,894.38/698,857.07 = 128,906.79/x
  3. Step 3: Cross multiply
    465,894.38x = 698,857.07 × 128,906.79
  4. Step 4: Simplify right side
    465,894.38x = 90,087,420,917.97
  5. Step 5: Solve for x
    x = 90,087,420,917.97/465,894.38
  6. Step 6: Final answer
    x = 193,364.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.