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Finding the Fourth Proportional to 64,929.72, 97,393.56 and 33,321.54

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Solution

The fourth proportional to 64,929.72, 97,393.56 and 33,321.54 is: 49,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,929.72 : 97,393.56 = 33,321.54 : x
  2. Step 2: Convert to fraction form
    64,929.72/97,393.56 = 33,321.54/x
  3. Step 3: Cross multiply
    64,929.72x = 97,393.56 × 33,321.54
  4. Step 4: Simplify right side
    64,929.72x = 3,245,303,405.28
  5. Step 5: Solve for x
    x = 3,245,303,405.28/64,929.72
  6. Step 6: Final answer
    x = 49,981.79

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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.