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Finding the Fourth Proportional to 247,778.79, 341,905.71 and 145,781.83

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Solution

The fourth proportional to 247,778.79, 341,905.71 and 145,781.83 is: 201,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,778.79 : 341,905.71 = 145,781.83 : x
  2. Step 2: Convert to fraction form
    247,778.79/341,905.71 = 145,781.83/x
  3. Step 3: Cross multiply
    247,778.79x = 341,905.71 × 145,781.83
  4. Step 4: Simplify right side
    247,778.79x = 49,843,640,091.25
  5. Step 5: Solve for x
    x = 49,843,640,091.25/247,778.79
  6. Step 6: Final answer
    x = 201,161.85

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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.