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Finding the Fourth Proportional to 641,792.72, 885,906.60 and 373,520.72

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Solution

The fourth proportional to 641,792.72, 885,906.60 and 373,520.72 is: 515,593.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,792.72 : 885,906.60 = 373,520.72 : x
  2. Step 2: Convert to fraction form
    641,792.72/885,906.60 = 373,520.72/x
  3. Step 3: Cross multiply
    641,792.72x = 885,906.60 × 373,520.72
  4. Step 4: Simplify right side
    641,792.72x = 330,904,471,084.75
  5. Step 5: Solve for x
    x = 330,904,471,084.75/641,792.72
  6. Step 6: Final answer
    x = 515,593.99

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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.