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Finding the Fourth Proportional to 702,623.34, 969,620.67 and 380,336.09

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Solution

The fourth proportional to 702,623.34, 969,620.67 and 380,336.09 is: 524,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,623.34 : 969,620.67 = 380,336.09 : x
  2. Step 2: Convert to fraction form
    702,623.34/969,620.67 = 380,336.09/x
  3. Step 3: Cross multiply
    702,623.34x = 969,620.67 × 380,336.09
  4. Step 4: Simplify right side
    702,623.34x = 368,781,729,562.88
  5. Step 5: Solve for x
    x = 368,781,729,562.88/702,623.34
  6. Step 6: Final answer
    x = 524,864.05

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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.