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Finding the Fourth Proportional to 64,766.08, 89,378.94 and 36,472.78

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Solution

The fourth proportional to 64,766.08, 89,378.94 and 36,472.78 is: 50,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,766.08 : 89,378.94 = 36,472.78 : x
  2. Step 2: Convert to fraction form
    64,766.08/89,378.94 = 36,472.78/x
  3. Step 3: Cross multiply
    64,766.08x = 89,378.94 × 36,472.78
  4. Step 4: Simplify right side
    64,766.08x = 3,259,898,415.25
  5. Step 5: Solve for x
    x = 3,259,898,415.25/64,766.08
  6. Step 6: Final answer
    x = 50,333.42

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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.