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Finding the Fourth Proportional to 682,457.88, 941,645.90 and 392,105.04

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Solution

The fourth proportional to 682,457.88, 941,645.90 and 392,105.04 is: 541,021.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,457.88 : 941,645.90 = 392,105.04 : x
  2. Step 2: Convert to fraction form
    682,457.88/941,645.90 = 392,105.04/x
  3. Step 3: Cross multiply
    682,457.88x = 941,645.90 × 392,105.04
  4. Step 4: Simplify right side
    682,457.88x = 369,224,103,285.34
  5. Step 5: Solve for x
    x = 369,224,103,285.34/682,457.88
  6. Step 6: Final answer
    x = 541,021.09

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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.