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Finding the Fourth Proportional to 93,211.70, 128,632.77 and 50,769.86

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Solution

The fourth proportional to 93,211.70, 128,632.77 and 50,769.86 is: 70,062.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,211.70 : 128,632.77 = 50,769.86 : x
  2. Step 2: Convert to fraction form
    93,211.70/128,632.77 = 50,769.86/x
  3. Step 3: Cross multiply
    93,211.70x = 128,632.77 × 50,769.86
  4. Step 4: Simplify right side
    93,211.70x = 6,530,667,724.31
  5. Step 5: Solve for x
    x = 6,530,667,724.31/93,211.70
  6. Step 6: Final answer
    x = 70,062.75

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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.