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Finding the Fourth Proportional to 51,364.92, 70,720.05 and 45,309.99

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Solution

The fourth proportional to 51,364.92, 70,720.05 and 45,309.99 is: 62,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,364.92 : 70,720.05 = 45,309.99 : x
  2. Step 2: Convert to fraction form
    51,364.92/70,720.05 = 45,309.99/x
  3. Step 3: Cross multiply
    51,364.92x = 70,720.05 × 45,309.99
  4. Step 4: Simplify right side
    51,364.92x = 3,204,324,758.30
  5. Step 5: Solve for x
    x = 3,204,324,758.30/51,364.92
  6. Step 6: Final answer
    x = 62,383.52

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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.