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Finding the Fourth Proportional to 21,653.91, 32,482.03 and 6,863.98

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Solution

The fourth proportional to 21,653.91, 32,482.03 and 6,863.98 is: 10,296.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.91 : 32,482.03 = 6,863.98 : x
  2. Step 2: Convert to fraction form
    21,653.91/32,482.03 = 6,863.98/x
  3. Step 3: Cross multiply
    21,653.91x = 32,482.03 × 6,863.98
  4. Step 4: Simplify right side
    21,653.91x = 222,955,905.05
  5. Step 5: Solve for x
    x = 222,955,905.05/21,653.91
  6. Step 6: Final answer
    x = 10,296.34

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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.