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Finding the Fourth Proportional to 21,662.55, 32,496.92 and 6,670.94

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Solution

The fourth proportional to 21,662.55, 32,496.92 and 6,670.94 is: 10,007.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,662.55 : 32,496.92 = 6,670.94 : x
  2. Step 2: Convert to fraction form
    21,662.55/32,496.92 = 6,670.94/x
  3. Step 3: Cross multiply
    21,662.55x = 32,496.92 × 6,670.94
  4. Step 4: Simplify right side
    21,662.55x = 216,784,841.02
  5. Step 5: Solve for x
    x = 216,784,841.02/21,662.55
  6. Step 6: Final answer
    x = 10,007.36

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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.