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Finding the Fourth Proportional to 465,893.88, 698,856.32 and 128,906.29

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Solution

The fourth proportional to 465,893.88, 698,856.32 and 128,906.29 is: 193,363.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,893.88 : 698,856.32 = 128,906.29 : x
  2. Step 2: Convert to fraction form
    465,893.88/698,856.32 = 128,906.29/x
  3. Step 3: Cross multiply
    465,893.88x = 698,856.32 × 128,906.29
  4. Step 4: Simplify right side
    465,893.88x = 90,086,975,454.25
  5. Step 5: Solve for x
    x = 90,086,975,454.25/465,893.88
  6. Step 6: Final answer
    x = 193,363.72

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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.