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Finding the Fourth Proportional to 64,661.02, 96,991.53 and 17,912.68

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Solution

The fourth proportional to 64,661.02, 96,991.53 and 17,912.68 is: 26,869.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,661.02 : 96,991.53 = 17,912.68 : x
  2. Step 2: Convert to fraction form
    64,661.02/96,991.53 = 17,912.68/x
  3. Step 3: Cross multiply
    64,661.02x = 96,991.53 × 17,912.68
  4. Step 4: Simplify right side
    64,661.02x = 1,737,378,239.60
  5. Step 5: Solve for x
    x = 1,737,378,239.60/64,661.02
  6. Step 6: Final answer
    x = 26,869.02

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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.