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Finding the Fourth Proportional to 64,992.36, 97,491.99 and 20,622.58

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Solution

The fourth proportional to 64,992.36, 97,491.99 and 20,622.58 is: 30,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,992.36 : 97,491.99 = 20,622.58 : x
  2. Step 2: Convert to fraction form
    64,992.36/97,491.99 = 20,622.58/x
  3. Step 3: Cross multiply
    64,992.36x = 97,491.99 × 20,622.58
  4. Step 4: Simplify right side
    64,992.36x = 2,010,536,562.33
  5. Step 5: Solve for x
    x = 2,010,536,562.33/64,992.36
  6. Step 6: Final answer
    x = 30,934.97

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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.