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Finding the Fourth Proportional to 21,651.17, 32,477.92 and 6,858.97

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Solution

The fourth proportional to 21,651.17, 32,477.92 and 6,858.97 is: 10,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.17 : 32,477.92 = 6,858.97 : x
  2. Step 2: Convert to fraction form
    21,651.17/32,477.92 = 6,858.97/x
  3. Step 3: Cross multiply
    21,651.17x = 32,477.92 × 6,858.97
  4. Step 4: Simplify right side
    21,651.17x = 222,764,980.60
  5. Step 5: Solve for x
    x = 222,764,980.60/21,651.17
  6. Step 6: Final answer
    x = 10,288.82

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1.5x scale

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.