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Finding the Fourth Proportional to 389,697.36, 584,568.72 and 109,236.48

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Solution

The fourth proportional to 389,697.36, 584,568.72 and 109,236.48 is: 163,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,697.36 : 584,568.72 = 109,236.48 : x
  2. Step 2: Convert to fraction form
    389,697.36/584,568.72 = 109,236.48/x
  3. Step 3: Cross multiply
    389,697.36x = 584,568.72 × 109,236.48
  4. Step 4: Simplify right side
    389,697.36x = 63,856,229,290.91
  5. Step 5: Solve for x
    x = 63,856,229,290.91/389,697.36
  6. Step 6: Final answer
    x = 163,861.08

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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.