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Finding the Fourth Proportional to 693,861.32, 957,516.18 and 392,048.84

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Solution

The fourth proportional to 693,861.32, 957,516.18 and 392,048.84 is: 541,020.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,861.32 : 957,516.18 = 392,048.84 : x
  2. Step 2: Convert to fraction form
    693,861.32/957,516.18 = 392,048.84/x
  3. Step 3: Cross multiply
    693,861.32x = 957,516.18 × 392,048.84
  4. Step 4: Simplify right side
    693,861.32x = 375,393,107,650.23
  5. Step 5: Solve for x
    x = 375,393,107,650.23/693,861.32
  6. Step 6: Final answer
    x = 541,020.37

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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.