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Finding the Fourth Proportional to 392,818.74, 589,216.44 and 108,526.34

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Solution

The fourth proportional to 392,818.74, 589,216.44 and 108,526.34 is: 162,786.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,818.74 : 589,216.44 = 108,526.34 : x
  2. Step 2: Convert to fraction form
    392,818.74/589,216.44 = 108,526.34/x
  3. Step 3: Cross multiply
    392,818.74x = 589,216.44 × 108,526.34
  4. Step 4: Simplify right side
    392,818.74x = 63,945,503,701.03
  5. Step 5: Solve for x
    x = 63,945,503,701.03/392,818.74
  6. Step 6: Final answer
    x = 162,786.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.