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Finding the Fourth Proportional to 64,660.56, 96,990.58 and 17,913.28

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Solution

The fourth proportional to 64,660.56, 96,990.58 and 17,913.28 is: 26,869.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,660.56 : 96,990.58 = 17,913.28 : x
  2. Step 2: Convert to fraction form
    64,660.56/96,990.58 = 17,913.28/x
  3. Step 3: Cross multiply
    64,660.56x = 96,990.58 × 17,913.28
  4. Step 4: Simplify right side
    64,660.56x = 1,737,419,416.90
  5. Step 5: Solve for x
    x = 1,737,419,416.90/64,660.56
  6. Step 6: Final answer
    x = 26,869.85

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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.