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Finding the Fourth Proportional to 76,632.92, 105,768.02 and 47,965.94

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Solution

The fourth proportional to 76,632.92, 105,768.02 and 47,965.94 is: 66,202.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,632.92 : 105,768.02 = 47,965.94 : x
  2. Step 2: Convert to fraction form
    76,632.92/105,768.02 = 47,965.94/x
  3. Step 3: Cross multiply
    76,632.92x = 105,768.02 × 47,965.94
  4. Step 4: Simplify right side
    76,632.92x = 5,073,262,501.24
  5. Step 5: Solve for x
    x = 5,073,262,501.24/76,632.92
  6. Step 6: Final answer
    x = 66,202.13

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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.