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Finding the Fourth Proportional to 64,321.83, 96,631.07 and 61,664.67

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Solution

The fourth proportional to 64,321.83, 96,631.07 and 61,664.67 is: 92,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,321.83 : 96,631.07 = 61,664.67 : x
  2. Step 2: Convert to fraction form
    64,321.83/96,631.07 = 61,664.67/x
  3. Step 3: Cross multiply
    64,321.83x = 96,631.07 × 61,664.67
  4. Step 4: Simplify right side
    64,321.83x = 5,958,722,734.97
  5. Step 5: Solve for x
    x = 5,958,722,734.97/64,321.83
  6. Step 6: Final answer
    x = 92,639.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.