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Finding the Fourth Proportional to 685,332, 945,626.94 and 443,581.02

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Solution

The fourth proportional to 685,332, 945,626.94 and 443,581.02 is: 612,056.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,332 : 945,626.94 = 443,581.02 : x
  2. Step 2: Convert to fraction form
    685,332/945,626.94 = 443,581.02/x
  3. Step 3: Cross multiply
    685,332x = 945,626.94 × 443,581.02
  4. Step 4: Simplify right side
    685,332x = 419,462,162,584.68
  5. Step 5: Solve for x
    x = 419,462,162,584.68/685,332
  6. Step 6: Final answer
    x = 612,056.88

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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.