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Finding the Fourth Proportional to 64,971.36, 89,660.46 and 35,163.36

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Solution

The fourth proportional to 64,971.36, 89,660.46 and 35,163.36 is: 48,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,971.36 : 89,660.46 = 35,163.36 : x
  2. Step 2: Convert to fraction form
    64,971.36/89,660.46 = 35,163.36/x
  3. Step 3: Cross multiply
    64,971.36x = 89,660.46 × 35,163.36
  4. Step 4: Simplify right side
    64,971.36x = 3,152,763,032.75
  5. Step 5: Solve for x
    x = 3,152,763,032.75/64,971.36
  6. Step 6: Final answer
    x = 48,525.43

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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.