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Finding the Fourth Proportional to 307,081.20, 460,621.80 and 107,335.20

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Solution

The fourth proportional to 307,081.20, 460,621.80 and 107,335.20 is: 161,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,081.20 : 460,621.80 = 107,335.20 : x
  2. Step 2: Convert to fraction form
    307,081.20/460,621.80 = 107,335.20/x
  3. Step 3: Cross multiply
    307,081.20x = 460,621.80 × 107,335.20
  4. Step 4: Simplify right side
    307,081.20x = 49,440,933,027.36
  5. Step 5: Solve for x
    x = 49,440,933,027.36/307,081.20
  6. Step 6: Final answer
    x = 161,002.80

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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.