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Finding the Fourth Proportional to 689,993,457.74, 952,274,470.11 and 392,707,983.50

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Solution

The fourth proportional to 689,993,457.74, 952,274,470.11 and 392,707,983.50 is: 541,984,540.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,993,457.74 : 952,274,470.11 = 392,707,983.50 : x
  2. Step 2: Convert to fraction form
    689,993,457.74/952,274,470.11 = 392,707,983.50/x
  3. Step 3: Cross multiply
    689,993,457.74x = 952,274,470.11 × 392,707,983.50
  4. Step 4: Simplify right side
    689,993,457.74x = 373,965,786,895,429,120
  5. Step 5: Solve for x
    x = 373,965,786,895,429,120/689,993,457.74
  6. Step 6: Final answer
    x = 541,984,540.14

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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.