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Finding the Fourth Proportional to 79,313.56, 109,430.52 and 51,035.64

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Solution

The fourth proportional to 79,313.56, 109,430.52 and 51,035.64 is: 70,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,313.56 : 109,430.52 = 51,035.64 : x
  2. Step 2: Convert to fraction form
    79,313.56/109,430.52 = 51,035.64/x
  3. Step 3: Cross multiply
    79,313.56x = 109,430.52 × 51,035.64
  4. Step 4: Simplify right side
    79,313.56x = 5,584,856,623.73
  5. Step 5: Solve for x
    x = 5,584,856,623.73/79,313.56
  6. Step 6: Final answer
    x = 70,414.90

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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.